How To Configure The Pro Site and my Plugins Page

1) How do I configure my user's site so that in the "Your Account", the submenu "Bulk Upgrades" will not show the Subscribe link since I do not have the facility to collect or receive paypal. I want to know where I can configure it so that it will not link to the paypal sandbox page. I want to be able to do it manually.

2) How do I edit that plugin page so that it will not be visible to my user the link where the plugins comes from, you know those links that shows "visit the plugins page" and the name of the plugin developer.
Thanks.