diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
index da7a98f330..32e23893d3 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
@@ -128,15 +128,11 @@ public class RecentsAnimationCallbacks implements
                     mController::finishAnimationToApp);
         } else {
             RemoteAnimationTarget[] nonAppTargets;
-            if (!TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
-                nonAppTargets = mSystemUiProxy.onGoingToRecentsLegacy(appTargets);
-            } else {
-                final ArrayList<RemoteAnimationTarget> apps = new ArrayList<>();
-                final ArrayList<RemoteAnimationTarget> nonApps = new ArrayList<>();
-                classifyTargets(appTargets, apps, nonApps);
-                appTargets = apps.toArray(new RemoteAnimationTarget[apps.size()]);
-                nonAppTargets = nonApps.toArray(new RemoteAnimationTarget[nonApps.size()]);
-            }
+            final ArrayList<RemoteAnimationTarget> apps = new ArrayList<>();
+            final ArrayList<RemoteAnimationTarget> nonApps = new ArrayList<>();
+            classifyTargets(appTargets, apps, nonApps);
+            appTargets = apps.toArray(new RemoteAnimationTarget[apps.size()]);
+            nonAppTargets = nonApps.toArray(new RemoteAnimationTarget[nonApps.size()]);
             if (nonAppTargets == null) {
                 nonAppTargets = new RemoteAnimationTarget[0];
             }
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 673de149b9..0c2f29b8db 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -1000,77 +1000,6 @@ public class SystemUiProxy implements ISystemUiProxy, NavHandle, SafeCloseable {
         }
     }
 
-    /**
-     * Start multiple tasks in split-screen simultaneously.
-     */
-    public void startTasksWithLegacyTransition(int taskId1, Bundle options1, int taskId2,
-            Bundle options2, @StagePosition int splitPosition,
-            @PersistentSnapPosition int snapPosition, RemoteAnimationAdapter adapter,
-            InstanceId instanceId) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSplitScreen.startTasksWithLegacyTransition(taskId1, options1, taskId2, options2,
-                        splitPosition, snapPosition, adapter, instanceId);
-            } catch (RemoteException e) {
-                Log.w(TAG, splitFailureMessage(
-                        "startTasksWithLegacyTransition", "RemoteException"), e);
-            }
-        }
-    }
-
-    public void startIntentAndTaskWithLegacyTransition(PendingIntent pendingIntent, int userId1,
-            Bundle options1, int taskId, Bundle options2, @StagePosition int splitPosition,
-            @PersistentSnapPosition int snapPosition, RemoteAnimationAdapter adapter,
-            InstanceId instanceId) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSplitScreen.startIntentAndTaskWithLegacyTransition(pendingIntent, userId1,
-                        options1, taskId, options2, splitPosition, snapPosition, adapter,
-                        instanceId);
-            } catch (RemoteException e) {
-                Log.w(TAG, splitFailureMessage(
-                        "startIntentAndTaskWithLegacyTransition", "RemoteException"), e);
-            }
-        }
-    }
-
-    public void startShortcutAndTaskWithLegacyTransition(ShortcutInfo shortcutInfo, Bundle options1,
-            int taskId, Bundle options2, @StagePosition int splitPosition,
-            @PersistentSnapPosition int snapPosition, RemoteAnimationAdapter adapter,
-            InstanceId instanceId) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSplitScreen.startShortcutAndTaskWithLegacyTransition(shortcutInfo, options1,
-                        taskId, options2, splitPosition, snapPosition, adapter, instanceId);
-            } catch (RemoteException e) {
-                Log.w(TAG, splitFailureMessage(
-                        "startShortcutAndTaskWithLegacyTransition", "RemoteException"), e);
-            }
-        }
-    }
-
-    /**
-     * Starts a pair of intents or shortcuts in split-screen using legacy transition. Passing a
-     * non-null shortcut info means to start the app as a shortcut.
-     */
-    public void startIntentsWithLegacyTransition(PendingIntent pendingIntent1, int userId1,
-            @Nullable ShortcutInfo shortcutInfo1, @Nullable Bundle options1,
-            PendingIntent pendingIntent2, int userId2, @Nullable ShortcutInfo shortcutInfo2,
-            @Nullable Bundle options2, @StagePosition int sidePosition,
-            @PersistentSnapPosition int snapPosition, RemoteAnimationAdapter adapter,
-            InstanceId instanceId) {
-        if (mSystemUiProxy != null) {
-            try {
-                mSplitScreen.startIntentsWithLegacyTransition(pendingIntent1, userId1,
-                        shortcutInfo1, options1, pendingIntent2, userId2, shortcutInfo2, options2,
-                        sidePosition, snapPosition, adapter, instanceId);
-            } catch (RemoteException e) {
-                Log.w(TAG, splitFailureMessage(
-                        "startIntentsWithLegacyTransition", "RemoteException"), e);
-            }
-        }
-    }
-
     public void startShortcut(String packageName, String shortcutId, int position,
             Bundle options, UserHandle user, InstanceId instanceId) {
         if (mSplitScreen != null) {
@@ -1105,36 +1034,6 @@ public class SystemUiProxy implements ISystemUiProxy, NavHandle, SafeCloseable {
         }
     }
 
-    /**
-     * Call this when going to recents so that shell can set-up and provide appropriate leashes
-     * for animation (eg. DividerBar).
-     *
-     * @return RemoteAnimationTargets of windows that need to animate but only exist in shell.
-     */
-    @Nullable
-    public RemoteAnimationTarget[] onGoingToRecentsLegacy(RemoteAnimationTarget[] apps) {
-        if (!TaskAnimationManager.ENABLE_SHELL_TRANSITIONS && mSplitScreen != null) {
-            try {
-                return mSplitScreen.onGoingToRecentsLegacy(apps);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call onGoingToRecentsLegacy");
-            }
-        }
-        return null;
-    }
-
-    @Nullable
-    public RemoteAnimationTarget[] onStartingSplitLegacy(RemoteAnimationTarget[] apps) {
-        if (mSplitScreen != null) {
-            try {
-                return mSplitScreen.onStartingSplitLegacy(apps);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call onStartingSplitLegacy");
-            }
-        }
-        return null;
-    }
-
     //
     // One handed
     //
diff --git a/quickstep/src/com/android/quickstep/TaskAnimationManager.java b/quickstep/src/com/android/quickstep/TaskAnimationManager.java
index 723aa03b9c..f414399a0b 100644
--- a/quickstep/src/com/android/quickstep/TaskAnimationManager.java
+++ b/quickstep/src/com/android/quickstep/TaskAnimationManager.java
@@ -264,12 +264,7 @@ public class TaskAnimationManager implements RecentsAnimationCallbacks.RecentsAn
                     }
                 }
 
-                RemoteAnimationTarget[] nonAppTargets = ENABLE_SHELL_TRANSITIONS
-                        ? null : getSystemUiProxy().onStartingSplitLegacy(
-                                appearedTaskTargets);
-                if (nonAppTargets == null) {
-                    nonAppTargets = new RemoteAnimationTarget[0];
-                }
+                RemoteAnimationTarget[] nonAppTargets = new RemoteAnimationTarget[0];
                 if ((containerInterface.isInLiveTileMode()
                             || mLastGestureState.getEndTarget() == RECENTS
                             || isNonRecentsStartedTasksAppeared(appearedTaskTargets))