Remove unused flavor

mobile/android/app/build.gradle

@@ -81,10 +81,6 @@ android {
             dimension "default"
             applicationIdSuffix ".dev"
         }
-        face {
-            dimension "default"
-            applicationIdSuffix ".face"
-        }
         playstore {
             dimension "default"
         }

mobile/android/app/src/face/AndroidManifest.xml

@@ -1,10 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="io.ente.photos">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-</manifest>

mobile/android/app/src/face/res/values/strings.xml

@@ -1,4 +0,0 @@
-<resources>
-    <string name="app_name">Ente Face</string>
-    <string name="backup">backup face</string>
-</resources>