Revert^2 "Nullability Annotations replacement"

This reverts commit 19d1d3d15d.

Reason for revert: revert it because this is not the root cause.

bug: 316867690
Change-Id: I0f168dbb64044aa720202af7b1040afd4f028c9c

src/com/android/settings/development/graphicsdriver/GraphicsDriverSystemPropertiesWrapper.java

@@ -14,9 +14,11 @@
  * limitations under the License.
  */
 package com.android.settings.development.graphicsdriver;
-import android.annotation.NonNull;
-import android.annotation.Nullable;
+
 import android.os.SystemProperties;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 /**
  * Wrapper interface to access {@link SystemProperties}.
  *