Revert "Default shell_starting_surface to true to match platform behavior."

This reverts commit 6acba271098712d64d3977569f0dc1349a231e58.

Reason for revert: https://b.corp.google.com/issues/185818929#comment4

Change-Id: I30875c1f81808b92f529bd11c916fea05b93fd4d
diff --git a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
index b72cf39..009ca27 100644
--- a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
+++ b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
@@ -110,7 +110,7 @@
     private static final String TAG = "QuickstepTransition";
 
     private static final boolean ENABLE_SHELL_STARTING_SURFACE =
-            SystemProperties.getBoolean("persist.debug.shell_starting_surface", true);
+            SystemProperties.getBoolean("persist.debug.shell_starting_surface", false);
 
     /** Duration of status bar animations. */
     public static final int STATUS_BAR_TRANSITION_DURATION = 120;