Remove unnecessary 'cast' to unicode string.
Remove unnecessary 'cast' to unicode string.

safwanrahman/readthedocs.org,rtfd/readthedocs.org,davidfischer/readthedocs.org,davidfischer/readthedocs.org,safwanrahman/readthedocs.org,pombredanne/readthedocs.org,pombredanne/readthedocs.org,rtfd/readthedocs.org,davidfischer/readthedocs.org,safwanrahman/readthedocs.org,rtfd/readthedocs.org,rtfd/readthedocs.org,safwanrahman/readthedocs.org,davidfischer/readthedocs.org,pombredanne/readthedocs.org