Fix AlwaysOnTop stack may covered by RemoteAnimation

Now with hierarachical animation, the layer of
RecentsAnimation / RemoteAnimation are controlled by system.

Now Launcher side don't need to have other way to set layer for ZBoost
case, so remove setLayer & withLayer related logics for cleaning up.

Fix: 151024899
Test: manual, launch google map app -> enter PiP mode,
      swipe up to overview screen or launch activity from shortcut,
      make sure the PiP window is not covered by other apps.

Change-Id: I8028cd50d66f7d77e5d1ec6514e953c8be9935d6
(cherry picked from commit 99f7da7dd2)

quickstep/src/com/android/launcher3/QuickstepAppTransitionManagerImpl.java

@@ -611,7 +611,6 @@ public abstract class QuickstepAppTransitionManagerImpl extends LauncherAppTrans
                                 .withWindowCrop(target.screenSpaceBounds)
                                 .withAlpha(1f);
                     }
-                    builder.withLayer(RemoteAnimationProvider.getLayer(target, MODE_OPENING));
                     params[i] = builder.build();
                 }
                 surfaceApplier.scheduleApply(params);
@@ -718,7 +717,6 @@ public abstract class QuickstepAppTransitionManagerImpl extends LauncherAppTrans
                     params[i] = new SurfaceParams.Builder(target.leash)
                             .withAlpha(1f)
                             .withWindowCrop(target.screenSpaceBounds)
-                            .withLayer(RemoteAnimationProvider.getLayer(target, MODE_OPENING))
                             .withCornerRadius(cornerRadius)
                             .build();
                 }
@@ -775,7 +773,6 @@ public abstract class QuickstepAppTransitionManagerImpl extends LauncherAppTrans
                     }
                     params[i] = builder
                             .withWindowCrop(target.screenSpaceBounds)
-                            .withLayer(RemoteAnimationProvider.getLayer(target, MODE_CLOSING))
                             .build();
                 }
                 surfaceApplier.scheduleApply(params);