gc unused argument

I actually did consider this before, but thought we should keep it
because we are currently dicussing to add a CTX to vmod object
destructors. But this piece of code is unrelated and at any rate the
argument can be added back when we need it.

in short: @Dridi is right

bin/varnishd/cache/cache_vrt_vmod.c

@@ -163,12 +163,10 @@ VPI_Vmod_Init(VRT_CTX, struct vmod **hdl, unsigned nbr, void *ptr, int len,
 }
 
 void
-VPI_Vmod_Unload(VRT_CTX, struct vmod **hdl)
+VPI_Vmod_Unload(struct vmod **hdl)
 {
 	struct vmod *v;
 
-	(void) ctx;
-
 	ASSERT_CLI();
 
 	TAKE_OBJ_NOTNULL(v, hdl, VMOD_MAGIC);

include/vcc_interface.h

@@ -53,7 +53,7 @@ void VPI_count(VRT_CTX, unsigned);
 
 int VPI_Vmod_Init(VRT_CTX, struct vmod **hdl, unsigned nbr, void *ptr, int len,
     const char *nm, const char *path, const char *file_id, const char *backup);
-void VPI_Vmod_Unload(VRT_CTX, struct vmod **hdl);
+void VPI_Vmod_Unload(struct vmod **hdl);
 
 typedef int acl_match_f(VRT_CTX, const VCL_IP);
 

lib/libvcc/vcc_vmod.c

@@ -358,7 +358,7 @@ vcc_ParseImport(struct vcc *tl)
 	/* XXX: zero the function pointer structure ?*/
 	VSB_printf(ifp->fin, "\t\tVRT_priv_fini(&vmod_priv_%.*s);", PF(mod));
 	VSB_printf(ifp->final,
-	    "\t\tVPI_Vmod_Unload(ctx, &VGC_vmod_%.*s);", PF(mod));
+	    "\t\tVPI_Vmod_Unload(&VGC_vmod_%.*s);", PF(mod));
 
 	vj = vjsn_parse(vmd->json, &p);
 	XXXAZ(p);