convert: drop unused crlf_action from check_global_conv_flags_eol()

The crlf_action parameter hasn't been used since a0ad53c181 (convert:
Correct NNO tests and missing `LF will be replaced by CRLF`,
2016-08-13), where that part of the function was hoisted out to a
separate will_convert_lf_to_crlf() helper. Let's drop the useless
parameter.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

convert.c

@@ -195,7 +195,7 @@ static enum eol output_eol(enum crlf_action crlf_action)
 	return core_eol;
 }
 
-static void check_global_conv_flags_eol(const char *path, enum crlf_action crlf_action,
+static void check_global_conv_flags_eol(const char *path,
 			    struct text_stat *old_stats, struct text_stat *new_stats,
 			    int conv_flags)
 {
@@ -547,7 +547,7 @@ static int crlf_to_git(const struct index_state *istate,
 			new_stats.crlf += new_stats.lonelf;
 			new_stats.lonelf = 0;
 		}
-		check_global_conv_flags_eol(path, crlf_action, &stats, &new_stats, conv_flags);
+		check_global_conv_flags_eol(path, &stats, &new_stats, conv_flags);
 	}
 	if (!convert_crlf_into_lf)
 		return 0;