Utilities.trim never returns null.

This fixes a crash loop I was seeing on my device and also
preemptively fixes similar NullPointerExceptions.

Bug: 213931730
Test: Manually verified crash loop stopped with this change.
Change-Id: I8d2fc8475d42ac60b7fdc9219421a8c9733c7b9f
(cherry picked from commit 56be73be80)

src/com/android/launcher3/model/LoaderCursor.java

@@ -202,8 +202,7 @@ public class LoaderCursor extends CursorWrapper {
      * Returns the title or empty string
      */
     private String getTitle() {
-        String title = getString(titleIndex);
-        return TextUtils.isEmpty(title) ? "" : Utilities.trim(title);
+        return Utilities.trim(getString(titleIndex));
     }
 
     /**