Remove Overview atomic animation support

- Remove PLAY_ATOMIC_OVERVIEW_SCALE and PLAY_ATOMIC_OVERVIEW_PEEK
- Remove complicated parallel atomic animation support from
  AbstractStateChangeTouchController and subclasses
- Remove some code related to going between Overview <-> AllApps

Test: Swipe between states in all 3 navigation modes
Bug: 175137718
Change-Id: Ice314d46946c3a983cdc6ccf1a67effb5da9156e

src/com/android/launcher3/allapps/AllAppsTransitionController.java

@@ -155,19 +155,12 @@ public class AllAppsTransitionController
             StateAnimationConfig config, PendingAnimation builder) {
         float targetProgress = toState.getVerticalProgress(mLauncher);
         if (Float.compare(mProgress, targetProgress) == 0) {
-            if (!config.onlyPlayAtomicComponent()) {
-                setAlphas(toState, config, builder);
-            }
+            setAlphas(toState, config, builder);
             // Fail fast
             onProgressAnimationEnd();
             return;
         }
 
-        if (config.onlyPlayAtomicComponent()) {
-            // There is no atomic component for the all apps transition, so just return early.
-            return;
-        }
-
         Interpolator interpolator = config.userControlled ? LINEAR : toState == OVERVIEW
                 ? config.getInterpolator(ANIM_OVERVIEW_SCALE, FAST_OUT_SLOW_IN)
                 : FAST_OUT_SLOW_IN;