Remove unused variable
Remove unused variable

quantopian/datashape,ContinuumIO/datashape,llllllllll/datashape,cpcloud/datashape,blaze/datashape,cpcloud/datashape,cowlicks/datashape,cowlicks/datashape,llllllllll/datashape,blaze/datashape,quantopian/datashape,ContinuumIO/datashape