Revert "sm7125: overlay: Disable alpha compositing in WM"

This reverts commit c80b9febf8.

overlay/frameworks/base/core/res/res/values/config.xml

@@ -1293,12 +1293,6 @@
         <item>2</item> <!-- COLOR_MODE_SATURATED -->
         <item>3</item> <!-- COLOR_MODE_AUTOMATIC -->
     </integer-array>
-    
-        <!-- Flag indicating whether the surface flinger has limited
-         alpha compositing functionality in hardware.  If set, the window
-         manager will disable alpha trasformation in animations where not
-         strictly needed. -->
-    <bool name="config_sf_limitedAlpha">true</bool>
 
      <!-- The default value for transition animation scale found in developer settings.
          1.0 corresponds to 1x animator scale, 0 means that there will be no transition
@@ -1306,5 +1300,4 @@
          user-set value if toggled by settings so the "Transition animation scale" setting
          should also be hidden if intended to be permanent. -->
     <item name="config_appTransitionAnimationDurationScaleDefault" format="float" type="dimen">0.5</item>
-
-</resources>
+</resources>