remove infer_pos_args() from strutils (already in formatutils)

boltons/strutils.py

@@ -431,37 +431,3 @@ if __name__ == '__main__':
     print ord(b[-1])
     print b
     print DEACCENT_MAP
-
-
-_pos_farg_re = re.compile('({{)|'         # escaped open-brace
-                          '(}})|'         # escaped close-brace
-                          '({[:!.\[}])')  # anon positional format arg
-
-
-def infer_positional_format_args(fstr):
-    """
-    Infers positional arguments from a format string, for Python 2.6
-    backwards compatibility and also fixing/mixing explicit and
-    implicit positional arguments in newer Pythons.
-
-    >>> infer_positional_format_args('{} {} {}')
-    '{0} {1} {2}'
-    >>> infer_positional_format_args('{:d} {!s} {1} {[hi]} {{joek}}')
-    '{0:d} {1!s} {1} {2[hi]} {{joek}}'
-    """
-    # TODO: memoize
-    ret, max_anon = '', 0
-    # look for {: or {! or {. or {[ or {}
-    start, end, prev_end = 0, 0, 0
-    for match in _pos_farg_re.finditer(fstr):
-        start, end, group = match.start(), match.end(), match.group()
-        if prev_end < start:
-            ret += fstr[prev_end:start]
-        prev_end = end
-        if group == '{{' or group == '}}':
-            ret += group
-            continue
-        ret += '{%s%s' % (max_anon, group[1:])
-        max_anon += 1
-    ret += fstr[prev_end:]
-    return ret