removed duplicated code, using pydal's _compat.py

gluon/contrib/markmin/markmin2html.py

@@ -6,7 +6,7 @@
 from __future__ import print_function
 import re
 import urllib
-from gluon._compat import maketrans, urllib_quote, unicodeT, _local_html_escape, to_bytes, to_native, _local_html_escape as escape, xrange
+from pydal._compat import maketrans, urllib_quote, unicodeT, _local_html_escape, to_bytes, to_native, _local_html_escape as escape, xrange
 from ast import parse as ast_parse
 import ast