detect/http2: don't double register engines

Each keyword supporting DOH2 must register explicitly

src/detect-engine-mpm.c

@@ -107,11 +107,6 @@ static void RegisterInternal(const char *name, int direction, int priority,
         FatalError("MPM engine registration for %s failed", name);
     }
 
-    // every HTTP2 can be accessed from DOH2
-    if (alproto == ALPROTO_HTTP2 || alproto == ALPROTO_DNS) {
-        RegisterInternal(name, direction, priority, PrefilterRegister, GetData, GetDataSingle,
-                GetMultiData, ALPROTO_DOH2, sub_state, tx_min_progress);
-    }
     DetectBufferMpmRegistry *am = SCCalloc(1, sizeof(*am));
     BUG_ON(am == NULL);
     am->name = name;

src/detect-engine.c

@@ -236,12 +236,6 @@ static void AppLayerInspectEngineRegisterInternal(const char *name, AppProto alp
     } else {
         direction = 1;
     }
-    // every DNS or HTTP2 can be accessed from DOH2
-    if (alproto == ALPROTO_HTTP2 || alproto == ALPROTO_DNS) {
-        AppLayerInspectEngineRegisterInternal(name, ALPROTO_DOH2, dir, sub_state, progress,
-                Callback, GetData, GetDataSingle, GetMultiData);
-    }
-
     DetectEngineAppInspectionEngine *new_engine =
             SCCalloc(1, sizeof(DetectEngineAppInspectionEngine));
     if (unlikely(new_engine == NULL)) {