Remove animatorSet's duration

Setting this animationDuration slows down the individual animations.
This is fine as the individual animations already has the timings that will add up to spec.

bug: 343493101
Test: before: https://drive.google.com/file/d/1nuS1c143HUosaVdhde3GW8Ryz04gUW7x/view?usp=sharing
after: https://drive.google.com/file/d/1yNcYLqBFD0di-YISNMUpryzBhqNZdncm/view?usp=sharing
Flag: None Animation tweak.
Change-Id: I5f10388fdecd934801ca208a46cc6ba93094c56f

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

@@ -712,7 +712,6 @@ public class PrivateProfileManager extends UserProfileManager {
                         animateCollapseAnimation());
             }
         }
-        animatorSet.setDuration(EXPAND_COLLAPSE_DURATION);
         animatorSet.start();
     }