Revert "LU-2272 statahead: ll_intent_drop_lock() called in spinlock"

Actually I jumped the gun on this one. We'll wait until master version
is fully ready

This reverts commit eb39d82ae13ddb6010065cede13dca11f1da6aaf.
New tag 2.5.2-rc1

Change-Id: I1d37d5756b7f47e83d4467025ca67acc044ad09d