BUILD: http: remove the two unused constructors in rules and ana

__http_protocol_init() and __http_rules_init() were empty leftovers
from a previous more intense use of constructors. Let's just get rid
of them now.

src/http_ana.c

@@ -5173,12 +5173,6 @@ void http_destroy_txn(struct stream *s)
 
 DECLARE_POOL(pool_head_http_txn, "http_txn", sizeof(struct http_txn));
 
-__attribute__((constructor))
-static void __http_protocol_init(void)
-{
-}
-
-
 /*
  * Local variables:
  *  c-indent-level: 8

src/http_rules.c

@@ -490,11 +490,6 @@ struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, st
 	return NULL;
 }
 
-__attribute__((constructor))
-static void __http_rules_init(void)
-{
-}
-
 /*
  * Local variables:
  *  c-indent-level: 8