I just did it, but now it gives me a fatal error:
Fatal error: Call to undefined method stdClass::add_help_tab() in /home/a2946563/public_html/store/wp-admin/index.php on line 33
I did but there seems to be some issues with it.
I deleted the twenty-ten & twenty-eleven themes and the dashboard went to how it was supposed to look (with the navigation bar in the side). However, once I re-installed the two themes back, it reverted back to the picture I posted before. Any suggestions?