Revert "CLJ-1024: Check for invalid varags/destrucuring uses."

This reverts commit ed9670b84b0908918f853594272531acef542dd1.
Updates to changes.md for Clojure 1.5.0-RC15

Signed-off-by: Stuart Halloway <stu@thinkrelevance.com>
drop reverted ticket from changes.md