patches: Restore original wall62_2 patch.
patches: Restore original wall62_2 patch.

commit ddb0c98a44eb30feb4b9 (a long, long time ago) changed the
wall62_2 patch to a new version that was supposedly better. But
really it is much worse: the colors just look washed out and ugly.
Restore the original version of this patch from before the change.

jmtd/freedoom,CWolfRU/freedoom,jmtd/freedoom,jmtd/freedoom,CWolfRU/freedoom