output/lua: remove unnecessary detect.h include

output-lua.c contained an include of detect.h.

Since we don't (and shouldn't) call any functions from detect.c in output-lua.c
and such coupling is generally unwanted this patch removes that include.

src/output-lua.c

@@ -24,7 +24,6 @@
 
 #include "suricata-common.h"
 #include "debug.h"
-#include "detect.h"
 #include "pkt-var.h"
 #include "conf.h"