Fixing various tests

> Migrating UI tests to AndroidJUnit4 for better support
> Removing obsolete RotationPreference test
> Fixing broken FileLogTest and AndroidJUnit4
> Removing InvariantDeviceProfileTest as it does not work well with
  resource overlays

Change-Id: I0abb1df6765d76d86c1c6c84e8ac35eb9a6bcdaa

src/com/android/launcher3/allapps/search/DefaultAppSearchAlgorithm.java

@@ -71,10 +71,6 @@ public class DefaultAppSearchAlgorithm implements SearchAlgorithm {
         return result;
     }
 
-    public static boolean matches(AppInfo info, String query) {
-        return matches(info, query, StringMatcher.getInstance());
-    }
-
     public static boolean matches(AppInfo info, String query, StringMatcher matcher) {
         int queryLength = query.length();