remove unused deprecation suppression

packages/espresso/android/src/main/java/androidx/test/espresso/flutter/matcher/FlutterMatchers.java

@@ -95,8 +95,7 @@ private IsFlutterViewMatcher() {}
     public void describeTo(Description description) {
       description.appendText("is a FlutterView");
     }
-
-    @SuppressWarnings("deprecation")
+
     @Override
     public boolean matchesSafely(View flutterView) {
       return flutterView instanceof FlutterView;