Revert #29951 - Auto Enable/Disable repository
Auto-Enablement of Custom Repos needs to be revoked.
This feature is a little dangerous since it affects live content hosts.
A better design is needed before enabling this feature and hence needs to be reverted.
Repo auto enable on registration feature needs to be reverted because it
affects even live content hosts. This makes is confusing and possibly
dangerous. This commit reverts the work done in issue #29951
This reverts commit 80c3541a0c42c3e4c5f71ec216dc808aefb00efd.