drop rfc.sh

fixes bug 1154763

git-review has long replaced rfc.sh, so this can be removed.

Change-Id: Icccbaa1ab393834370790ffb93f431b3435586be
(cherry picked from commit 2b72c85a68a0621f838fdb39669bb010b74ba50a)
Merge "drop rfc.sh" into milestone-proposed