Remove the rolling in favor of the side-bobbing. I don't believe both effects would...

Remove the rolling in favor of the side-bobbing. I don't believe both effects would make sense to keep, and imo the side bobbing looks better than the rolling and simulates steps better. This can be reverted if anyone misses the rolling too much, but I don't think we need to load the code with both effects.

From: MirceaKitsune <sonichedgehog_hyperblast00@yahoo.com>

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10302 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=8ac958bd2673755fb1ea211e05cdcd65a3c6def6