remove unused variables due to new m3 theming methods in place

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/owncloud/android/ui/activity/UploadFilesActivity.java

@@ -289,7 +289,6 @@ public class UploadFilesActivity extends DrawerActivity implements LocalFileList
             setSelectAllMenuItem(selectAll, mSelectAll);
         }
 
-        int fontColor = themeColorUtils.appBarPrimaryFontColor(this);
         final MenuItem item = menu.findItem(R.id.action_search);
         mSearchView = (SearchView) MenuItemCompat.getActionView(item);
         viewThemeUtils.androidx.themeToolbarSearchView(mSearchView);

app/src/main/java/com/owncloud/android/ui/activity/UserInfoActivity.java

@@ -204,7 +204,6 @@ public class UserInfoActivity extends DrawerActivity implements Injectable {
             if (backgroundImageView != null) {
 
                 String background = getStorageManager().getCapability(user.getAccountName()).getServerBackground();
-                int primaryColor = themeColorUtils.primaryColor(getAccount(), false, this);
 
                 if (URLUtil.isValidUrl(background)) {
                     // background image