manifest: remove e975

Change-Id: If265cace0260acb2a80db6338cccc18c778c274f
manifest: switch gee variant repos to my git

I was the only person still maintaining chad's repos anyway, so may
as well move to my own.  This will be useful in case he deletes his repos
and just makes more sense.

Change-Id: Ia099f24e35ca16be8be6b5f20ed5ae81bfa61a81
Merge "manifest: switch gee variant repos to my git" into kk44