Disabling Analytics code on subdomain

Is there a way to disable the Analytics code from showing when a subdomain is active? For example I would like the code to display for http://www.example.com, but not for http://m.example.com . I am using WordPress Mobile Pack, with a subdomain for a mobile theme to display, and I need to add custom mobile Analytics code instead of Google’s JS code, and thus need it to be disabled.

https://wordpress.org/plugins/google-analytics-for-wordpress/