Remove duplicate config for MacMini.

No-Try: true
Change-Id: I449c0fd435b233e9c9538c17295ef18348380658
Reviewed-on: https://skia-review.googlesource.com/53120
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
3 files changed