Revert "Close TaskSnapshot hardware buffer before remove from cache."

This reverts commit cc465c76.

Reason for revert: b/328017336
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:4e3c48ee904c1f0d6f92b185310774a02788d28d)
Merged-In: Ic93a80db0a805bb13ad9a7ca507eaa43e7e7211b
Change-Id: Ic93a80db0a805bb13ad9a7ca507eaa43e7e7211b

services/core/java/com/android/server/wm/SnapshotCache.java

@@ -16,7 +16,6 @@
 package com.android.server.wm;
 
 import android.annotation.Nullable;
-import android.hardware.HardwareBuffer;
 import android.util.ArrayMap;
 import android.window.TaskSnapshot;
 
@@ -93,10 +92,6 @@ abstract class SnapshotCache<TYPE extends WindowContainer> {
             if (entry != null) {
                 mAppIdMap.remove(entry.topApp);
                 mRunningCache.remove(id);
-                final HardwareBuffer buffer = entry.snapshot.getHardwareBuffer();
-                if (buffer != null) {
-                    buffer.close();
-                }
             }
         }
     }