Remove box shaped ripple flag.

Box ripple flag lived for too long, time to let it go.

Bug: 254512758
Test: DockingAnimationCallbackTest
Flag: NA
Change-Id: I12cfa993a0a922927459390d44d5f80cbeaf4643
diff --git a/packages/SystemUI/src/com/android/systemui/flags/Flags.kt b/packages/SystemUI/src/com/android/systemui/flags/Flags.kt
index 699532c..915a3f2 100644
--- a/packages/SystemUI/src/com/android/systemui/flags/Flags.kt
+++ b/packages/SystemUI/src/com/android/systemui/flags/Flags.kt
@@ -377,9 +377,6 @@
     // 1000 - dock
     val SIMULATE_DOCK_THROUGH_CHARGING = releasedFlag("simulate_dock_through_charging")
 
-    // TODO(b/254512758): Tracking Bug
-    @JvmField val ROUNDED_BOX_RIPPLE = releasedFlag("rounded_box_ripple")
-
     // TODO(b/273509374): Tracking Bug
     @JvmField
     val ALWAYS_SHOW_HOME_CONTROLS_ON_DREAMS =