Remove "Name Contains" query constraint from Diffusion for Repositories
Summary:
Ref T12819. Obsoleted by the Ferret engine "Query" field.
This is a compatibility break, I'll note it in the changelog.
Test Plan: Searched for repositories by name with "Query" instead of "Name Contains".
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12819
Differential Revision: https://secure.phabricator.com/D18588