Good Afternoon Salvatore.
For the 'edit' button, there is no EEM-rolebased-policy-resource to remove.
Thes is an .xsl file you could change in the CA Service Catalog(SC) product tree.
However, there are 2 important notes to be given on this:
NOTE1:
This change is not ROLE-dependent.
Which means that nobody can edit a request anymore.
NOTE2:
It is tricky though and a non-suported customization.
You need to be extremely carefull while customizing this in this way.
Please check whether you then still want to (completely) remove the edit button?
Thanks in advance and kind regards, Louis.
PS. Have a nice weekend.