setup.py: Make clean command acually remove Cython-generated files.
setup.py: Make clean command acually remove Cython-generated files.

JimDennis/pymssql,Aloomaio/pymssql,Aloomaio/pymssql,bladams/pymssql,zerolugithub/pymssql,ramiro/pymssql,ramiro/pymssql,pymssql/pymssql,zerolugithub/pymssql,klothe/pymssql,pymssql/pymssql,klothe/pymssql,bladams/pymssql,ramiro/pymssql,JimDennis/pymssql,bladams/pymssql,klothe/pymssql,JimDennis/pymssql,Aloomaio/pymssql,zerolugithub/pymssql