android, remove unused permissions

Author: petitlapin

android/app/src/main/AndroidManifest.xml

@@ -30,8 +30,4 @@
     <!-- OpenGL ES 2.0 -->
     <uses-feature android:glEsVersion="0x00020000" /> 
 
-    <!-- Allow writing to external storage -->
-    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
-    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
-    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
 </manifest>