revert enabling of hw quads for swtcl. It lead to problems with quad_strips, since...

revert enabling of hw quads for swtcl. It lead to problems with quad_strips, since they'll get reduced to quads sometimes if hw quads are enabled. But this needs more thought, since it looks like clipped primitives will always be emitted as polys, so the reduced primitives for triangles, quads, quads_strips, polys all need to be the same, otherwise get lockups with for instance the olympic test. Render templates would probably need to be changed for this to work.