Revert "Adds ability to ignore hacking validations with noqa"

The allownoqa decorator caused hacking to not enforce any rule using
that decorator. This change can be seen in the number of unit tests that
are run, before this patch its 150 and after its 198

This reverts commit ce4f1f35c9465fc88e764527fc987328f66f7c89.

Fixes-bug: # 1231149

Conflicts:
	hacking/core.py

Change-Id: I90044710f72ff1ad0b49e95b7aae854af34a057a
Add noqa support for H231 and H233

This was originally added in Iea3867b84212ab30bdd168b5dbd43c11a4dc535e
but that was reverted.

Change-Id: I670b0f3c12fd74b40aa74523bc3d33e08b4b9362
Merge "Revert "Adds ability to ignore hacking validations with noqa""
Merge "Add noqa support for H231 and H233"