Remove old implementation
Remove old implementation

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