Drop 1.7.11.x items from 1.7.12 release notes
Drop 1.7.11.x items from 1.7.12 release notes

Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git