Remove duplicated rule for C

Author: krassowski

docstring_to_markdown/rst.py

@@ -94,10 +94,6 @@ def __init__(
 )
 
 SPHINX_RULES: List[Directive] = [
-    Directive(
-        pattern=r':c:({}):`\.?(?P<name>[^`]+?)`'.format('|'.join(SPHINX_CROSS_REF_C)),
-        replacement=r'`\g<name>`'
-    ),
     Directive(
         pattern=r':c:({}):`\.?(?P<name>[^`]+?)`'.format('|'.join(SPHINX_CROSS_REF_C)),
         replacement=r'`\g<name>`'