Fix build for GCC 4.7

Change-Id: I4e9265369174d82b55fd435bc47887972f99c9d4
Revert "nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off"

This reverts commit 3f8f4ae48f4023e1c53722b1dc1a7ab897cbca14.

Change-Id: I5d7f1a8cde85eba7d01b4706979d82a8a8bb6b96