Revert "JIT: Suppress loop suspend checks."

Apparently this is the commit causing the weird data usage calculations. If not this one, we shoud revert
more of the recent ones. See this commit http://goo.gl/xmnOf

This reverts commit a7d5d0629aa90a4e5fba4e6895a972c4ac603128.

Conflicts:
	vm/compiler/Loop.h

Change-Id: Ib1be78e07773c2bdefb92a1fbd77b3fb9a1973d0