Use no action bar theme

(for InAppGallery and VideoPlayer activities)

Author: MHShetty

app/src/main/AndroidManifest.xml

@@ -162,15 +162,13 @@
 
         <activity
             android:name=".ui.activities.VideoPlayer"
-            android:theme="@style/Theme.Viewer"
             android:theme="@style/Theme.Design.NoActionBar"
             android:taskAffinity=".ui.activities.VideoPlayer"
             android:excludeFromRecents="true"
             android:exported="false"/>
 
         <activity
             android:name=".ui.activities.InAppGallery"
-            android:theme="@style/Theme.Viewer"
             android:theme="@style/Theme.Design.NoActionBar"
             android:taskAffinity=".ui.activities.InAppGallery"
             android:excludeFromRecents="true"