Revert "Moving taskbar lifecycle to TouchInteractionService"

This reverts commit e215fb730bb3d4a357a2c4bf0c082d3c0ad69495.

Reason for revert: DroidMonitor-triggered revert due to breakage https://android-build.googleplex.com/builds/tests/view?invocationId=I13700009003387451&testResultId=TR89423459137251402, bug https://buganizer.corp.google.com/issues/188755902

Bug: 188755902
Change-Id: I4650136975b60f311499ee6ff5b27ab9a32d23d6
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 2884fba..7ae729a 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -324,17 +324,15 @@
     }
 
     public static void scaleRectFAboutCenter(RectF r, float scale) {
-        scaleRectFAboutPivot(r, scale, r.centerX(), r.centerY());
-    }
-
-    public static void scaleRectFAboutPivot(RectF r, float scale, float px, float py) {
         if (scale != 1.0f) {
-            r.offset(-px, -py);
+            float cx = r.centerX();
+            float cy = r.centerY();
+            r.offset(-cx, -cy);
             r.left = r.left * scale;
             r.top = r.top * scale ;
             r.right = r.right * scale;
             r.bottom = r.bottom * scale;
-            r.offset(px, py);
+            r.offset(cx, cy);
         }
     }