gitweb: remove unused guess_file_syntax() parameter

Signed-off-by: Ian Kelling <ian@iankelling.org>
Acked-by: Jakub Narębski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 33d701d..6cb4280 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -3913,7 +3913,7 @@
 # guess file syntax for syntax highlighting; return undef if no highlighting
 # the name of syntax can (in the future) depend on syntax highlighter used
 sub guess_file_syntax {
-	my ($highlight, $mimetype, $file_name) = @_;
+	my ($highlight, $file_name) = @_;
 	return undef unless ($highlight && defined $file_name);
 	my $basename = basename($file_name, '.in');
 	return $highlight_basename{$basename}
@@ -7062,7 +7062,7 @@
 	$have_blame &&= ($mimetype =~ m!^text/!);
 
 	my $highlight = gitweb_check_feature('highlight');
-	my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
+	my $syntax = guess_file_syntax($highlight, $file_name);
 	$fd = run_highlighter($fd, $highlight, $syntax)
 		if $syntax;