removing debug code in scatterplot.py
removing debug code in scatterplot.py

tommy-u/chaco,ContinuumIO/chaco,ContinuumIO/chaco,burnpanck/chaco,tommy-u/chaco,ContinuumIO/chaco,burnpanck/chaco,ContinuumIO/chaco,burnpanck/chaco,tommy-u/chaco