Remove permissions for Google Ads since they no longer exist. Properly set the minSDK to 21.

app/src/main/AndroidManifest.xml

@@ -2,9 +2,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-sdk android:minSdkVersion="21" />    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-
     <application
         android:allowBackup="true"
         android:icon="@drawable/icon"
@@ -33,4 +30,4 @@
         <activity android:name="com.hyperling.apps.games.HighScoreActivity"/>
     </application>
 
-</manifest>
+</manifest>