Fix outdated LaunchableView documentation

The documentation was slightly outdated since this interface was changed
in http://ag/20946885.

Bug: 264728445
Change-Id: Ia86c71f38c75ab02b4f3970406f7d4f1adfd444d
Test: N/A

packages/SystemUI/animation/src/com/android/systemui/animation/LaunchableView.kt

@@ -35,8 +35,7 @@ interface LaunchableView {
      *
      * Note that calls to [View.setTransitionVisibility] shouldn't be blocked.
      *
-     * @param block whether we should block/postpone all calls to `setVisibility` and
-     * `setTransitionVisibility`.
+     * @param block whether we should block/postpone all calls to `setVisibility`.
      */
     fun setShouldBlockVisibilityChanges(block: Boolean)
 }