Revert "Synchronize bar expansion with WM Shell"

Revert submission 28703070-bubbles-defer-expand

Reason for revert: DroidMonitor. Potential culprit for b/359765550 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Reverted changes: /q/submissionid:28703070-bubbles-defer-expand

Change-Id: I5651cc8f740b1f0718abcfa8065e18c174657224

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarController.java

@@ -495,11 +495,6 @@ public class BubbleBarController extends IBubblesListener.Stub {
                 () -> mBubbleBarViewController.animateBubbleBarLocation(bubbleBarLocation));
     }
 
-    /** Notifies WMShell to show the expanded view. */
-    void showExpandedView() {
-        mSystemUiProxy.showExpandedView();
-    }
-
     //
     // Loading data for the bubbles
     //