[options] remove custom Formatter.format_help()

fixes superfluous newlines in --version output

gallery_dl/option.py

@@ -222,10 +222,6 @@ class Formatter(argparse.HelpFormatter):
     def _format_usage(self, usage, actions, groups, prefix):
         return f"Usage: {self._prog} [OPTIONS] URL [URL...]\n"
 
-    def format_help(self):
-        return self._long_break_matcher.sub(
-            "\n\n", self._root_section.format_help())
-
 
 def _parse_option(opt):
     key, _, value = opt.partition("=")

scripts/options.py

@@ -46,4 +46,6 @@ with util.lazy(PATH) as fp:
     fp.write(f"""# Command-Line Options
 
 <!-- auto-generated by {SELF} -->
-{opts[:-1]}""")
+
+
+{opts}""")