Remove Python 2.6

@@ -1,5 +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
+depend fmri=library/python-2/ply-27 type=require