Remove 'import datashape' from coercion.py
Remove 'import datashape' from coercion.py

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