Cleaning Utilities.java

> Removing some unused methods
> Moving some specialized methods to corresponding classes
> Removing GridProvider check as it is released

Bug: 257555083
Test: Presubmit
Change-Id: Ib0f8c673d018071d3f4b7d9247e0a35718ab009c
Merged-In: Ib0f8c673d018071d3f4b7d9247e0a35718ab009c

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

@@ -15,8 +15,6 @@
  */
 package com.android.launcher3.model;
 
-import static com.android.launcher3.Utilities.isValidExtraType;
-
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.Bitmap;
@@ -149,4 +147,12 @@ public class ModelUtils {
         info.intent = launchIntent;
         return info;
     }
+
+    /**
+     * @return true if the extra is either null or is of type {@param type}
+     */
+    private static boolean isValidExtraType(Intent intent, String key, Class type) {
+        Object extra = intent.getParcelableExtra(key);
+        return extra == null || type.isInstance(extra);
+    }
 }