embed.fnc: Remove spurious G flag from entry

This prevented an empty PERL_ARGS_ASSERT macro from being generated
here, but those are optional to use, so there is no advantage to
suppressing it.

Author: khwilliamson

embed.fnc

@@ -2419,7 +2419,7 @@ p	|void	|no_bareword_filehandle 				\
 				|NN const char *fhname
 Tefprv	|void	|noperl_die	|NN const char *pat			\
 				|...
-CGTdp	|void	|noshutdownhook
+CTdp	|void	|noshutdownhook
 Adp	|int	|nothreadhook
 p	|void	|notify_parser_that_encoding_changed
 : Used in perly.y