Enable cleaning for Play store version

app/src/main/java/eu/faircode/email/ActivityBase.java

@@ -766,7 +766,6 @@ abstract class ActivityBase extends AppCompatActivity implements SharedPreferenc
         @Override
         public void onFragmentDestroyed(@NonNull FragmentManager fm, @NonNull Fragment f) {
             log(fm, f, "onFragmentDestroyed");
-            if (!BuildConfig.PLAY_STORE_RELEASE)
             try {
                 for (Field field : f.getClass().getDeclaredFields()) {
                     Class<?> type = field.getType();