This is something which I have done in the past. It is suggested not to hide the hard quotas as hiding those will not let us know if the quota limits are over and this can be checked only if the data is downloaded.
1. Suppose we have X number of quotas and we need to hide only two quotas namely "CityQ" and "AgeQ".
3. In the js file, insert below code in the first "document.ready function". Change CityQ, AgeQ with the required quota names to be hidden - you can add as many quota names you want to hide.
4. Upload the SSI file.
5. Now clear the browser's cache and you will then observe that these two quotas are no more visible on the admin module, but the counts will still increase at the backend.
I hope this helps.