Urgent: Admin Area Dead

Host says I am getting this error:

PHP Fatal error: Uncaught exception ‘apiServiceException’ with message ‘Error calling GET https://www.googleapis.com/plus/v1/people/108818188031102723562/activities/public?maxResults=5&alt=json: (403) Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup.’ in /home/louisvm5/public_html/nerdlouisville/wp-content/plugins/google/lib/external/google/io/apiREST.php:86

How do I fix this? Can’t even access Plugin area of dashboard to remove this plugin and changing folder name seemingly does nothing.

https://ww.wp.xz.cn/plugins/google/