Remove LAUNCHER3_ALL_APPS_PULL_UP

Bug: 63712253
Verified: all apps transition fully functional
Verified: NO_ALL_APPS_ICON = false case also works.

Change-Id: I779fb7bd4927c5923da3f85590d912dbbbcdef4d

src/com/android/launcher3/BaseContainerView.java

@@ -62,7 +62,7 @@ public abstract class BaseContainerView extends FrameLayout
     public BaseContainerView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
 
-        if (FeatureFlags.LAUNCHER3_ALL_APPS_PULL_UP && this instanceof AllAppsContainerView) {
+        if (this instanceof AllAppsContainerView) {
             mBaseDrawable = new ColorDrawable();
         } else {
             TypedArray a = context.obtainStyledAttributes(attrs,