Disabler AppStateTracker debug log

Bug: 75934261
Change-Id: I0c09472073b90366441e6f63f8621c12b99265b2
Fix: 75934261
Test: boot
Test: atest $ANDROID_BUILD_TOP/frameworks/base/services/tests/servicestests/src/com/android/server/AppStateTrackerTest.java
diff --git a/services/core/java/com/android/server/AppStateTracker.java b/services/core/java/com/android/server/AppStateTracker.java
index 16be680..6d773e6 100644
--- a/services/core/java/com/android/server/AppStateTracker.java
+++ b/services/core/java/com/android/server/AppStateTracker.java
@@ -70,17 +70,12 @@
  * - Temporary power save whitelist
  * - Global "force all apps standby" mode enforced by battery saver.
  *
- * TODO: Make it a LocalService.
- *
  * Test:
   atest $ANDROID_BUILD_TOP/frameworks/base/services/tests/servicestests/src/com/android/server/AppStateTrackerTest.java
  */
 public class AppStateTracker {
-    private static final String TAG = "ForceAppStandbyTracker";
-    private static final boolean DEBUG = true;
-
-    @GuardedBy("AppStateTracker.class")
-    private static AppStateTracker sInstance;
+    private static final String TAG = "AppStateTracker";
+    private static final boolean DEBUG = false;
 
     private final Object mLock = new Object();
     private final Context mContext;