fix file activity

src/modified/AndroidManifest.xml

@@ -60,15 +60,6 @@
             </intent-filter>
         </activity>
 
-        <activity
-            android:name=".ui.activity.FileDisplayActivity"
-            tools:node="remove"/>
-
-        <activity-alias
-            android:name=".ui.activity.FileDisplayActivity"
-            android:targetActivity=".ui.activity.ModifiedFileDisplayActivity"
-            tools:replace="android:targetActivity"/>
-
         <activity-alias
             android:name=".authentication.AuthenticatorActivity"
             android:targetActivity=".authentication.ModifiedAuthenticatorActivity"