Fix compile error on Android

Remove an unused and deprecated enum value that was giving
compile errors due to a missing case statement when compiling
locally with -developer-build.

Pick-to: 6.2
Change-Id: Ieca2124beda122f603acfd1b5f5746284a8a1a6c
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

src/corelib/platform/android/qandroidextras_p.h

@@ -273,8 +273,6 @@ namespace QtAndroidPrivate
         PhysicalActivity,
         Contacts,
         Storage,
-        // TODO: remove after usages in other modules are renamed.
-        WriteStorage,
         Calendar
     };