Delete needless functions to simplify some code in contribulyze.py.
Delete needless functions to simplify some code in contribulyze.py.

* tools/dev/contribulyze.py
  (Contributor): Convert to new-style class.
  (Contributor.__init__): Don't set __hash__-related variables.
  (Contributor.__hash__): Delete.
  (LogMessage): Convert to new-style class.
  (LogMessage.__hash__): Delete.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@877445 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion