Remove obsolete cacheitem parameter to ui-functions

This parameter hasn't been used for a very long time...

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
diff --git a/ui-patch.c b/ui-patch.c
index a77f3f6..68ebb15 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -69,7 +69,7 @@
 		html("Error running diff");
 }
 
-void cgit_print_patch(char *hex, struct cacheitem *item)
+void cgit_print_patch(char *hex)
 {
 	struct commit *commit;
 	struct commitinfo *info;