CLEANUP: http/tcp actions: remove the scope member

The scope member is not used. This patch removes this entry.
diff --git a/src/hlua.c b/src/hlua.c
index f2e58a9..3a325b7 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -4588,22 +4588,22 @@
 	{ 0, NULL, NULL },
 }};
 
-static struct http_req_action_kw_list http_req_kws = {"lua", { }, {
+static struct http_req_action_kw_list http_req_kws = { { }, {
 	{ "lua", http_req_action_register_lua },
 	{ NULL, NULL }
 }};
 
-static struct http_res_action_kw_list http_res_kws = {"lua", { }, {
+static struct http_res_action_kw_list http_res_kws = { { }, {
 	{ "lua", http_res_action_register_lua },
 	{ NULL, NULL }
 }};
 
-static struct tcp_action_kw_list tcp_req_cont_kws = {"lua", { }, {
+static struct tcp_action_kw_list tcp_req_cont_kws = { { }, {
 	{ "lua", tcp_req_action_register_lua },
 	{ NULL, NULL }
 }};
 
-static struct tcp_action_kw_list tcp_res_cont_kws = {"lua", { }, {
+static struct tcp_action_kw_list tcp_res_cont_kws = { { }, {
 	{ "lua", tcp_res_action_register_lua },
 	{ NULL, NULL }
 }};