Revert "Install ripgrep on shellserver and devserver roles"

Summary:
This is a follow-up for 8227230bad1c, which installs ripgrep in core role.

This reverts commit 3a552557f533747602936384759738b72a620bba.

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D2637