Remove Python 2.6

*** 1,5 ****
  set name=pkg.fmri value=library/python-2/ply@3.9-@PVER@
  set name=pkg.renamed value=true
  set name=pkg.description value="ply - Python lex and yacc"
  set name=pkg.summary value="ply - Python lex and yacc"
! depend fmri=library/python-2/ply-26 type=require
--- 1,5 ----
  set name=pkg.fmri value=library/python-2/ply@3.9-@PVER@
  set name=pkg.renamed value=true
  set name=pkg.description value="ply - Python lex and yacc"
  set name=pkg.summary value="ply - Python lex and yacc"
! depend fmri=library/python-2/ply-27 type=require