Messaging: Remove unused code

Change-Id: I8093bb3e305ae323f7069bf42f9e83f8c8647cc7

src/com/android/messaging/util/ImageUtils.java

@@ -35,7 +35,6 @@ import android.net.Uri;
 import android.provider.MediaStore;
 import androidx.annotation.Nullable;
 import android.text.TextUtils;
-import android.view.View;
 
 import com.android.messaging.Factory;
 import com.android.messaging.datamodel.MediaScratchFileProvider;
@@ -169,15 +168,6 @@ public class ImageUtils {
         }
     }
 
-    /**
-     * Sets a drawable to the background of a view. setBackgroundDrawable() is deprecated since
-     * JB and replaced by setBackground().
-     */
-    @SuppressWarnings("deprecation")
-    public static void setBackgroundDrawableOnView(final View view, final Drawable drawable) {
-        view.setBackground(drawable);
-    }
-
     /**
      * Based on the input bitmap bounds given by BitmapFactory.Options, compute the required
      * sub-sampling size for loading a scaled down version of the bitmap to the required size