And deleted unused customize.py and removed some pylint warning.

On branch 13136_fix_hb2a_gui_issues
Changes to be committed:
 - modified:   HfirPDReductionControl.py
 - modified:   HfirPDReductionGUI.py
 - modified:   HfirUtility.py
 - modified:   MplFigureCanvas.py
 - deleted:    customize.py