http2: there is no status msg in HTTP2

so we revert its detection, mistaken with the status code

src/detect-http-stat-msg.c

@@ -71,9 +71,6 @@ static int g_http_stat_msg_buffer_id = 0;
 static InspectionBuffer *GetData(DetectEngineThreadCtx *det_ctx,
         const DetectEngineTransforms *transforms, Flow *_f,
         const uint8_t _flow_flags, void *txv, const int list_id);
-static InspectionBuffer *GetData2(DetectEngineThreadCtx *det_ctx,
-        const DetectEngineTransforms *transforms, Flow *_f, const uint8_t _flow_flags, void *txv,
-        const int list_id);
 static int DetectHttpStatMsgSetupSticky(DetectEngineCtx *de_ctx, Signature *s, const char *str);
 
 /**
@@ -105,12 +102,6 @@ void DetectHttpStatMsgRegister (void)
     DetectAppLayerMpmRegister2("http_stat_msg", SIG_FLAG_TOCLIENT, 3, PrefilterGenericMpmRegister,
             GetData, ALPROTO_HTTP1, HTP_RESPONSE_LINE);
 
-    DetectAppLayerInspectEngineRegister2("http_stat_msg", ALPROTO_HTTP2, SIG_FLAG_TOCLIENT,
-            HTTP2StateDataServer, DetectEngineInspectBufferGeneric, GetData2);
-
-    DetectAppLayerMpmRegister2("http_stat_msg", SIG_FLAG_TOCLIENT, 2, PrefilterGenericMpmRegister,
-            GetData2, ALPROTO_HTTP2, HTTP2StateDataServer);
-
     DetectBufferTypeSetDescriptionByName("http_stat_msg",
             "http response status message");
 
@@ -147,7 +138,7 @@ static int DetectHttpStatMsgSetupSticky(DetectEngineCtx *de_ctx, Signature *s, c
 {
     if (DetectBufferSetActiveList(s, g_http_stat_msg_buffer_id) < 0)
         return -1;
-    if (DetectSignatureSetAppProto(s, ALPROTO_HTTP) < 0)
+    if (DetectSignatureSetAppProto(s, ALPROTO_HTTP1) < 0)
         return -1;
     return 0;
 }
@@ -175,29 +166,6 @@ static InspectionBuffer *GetData(DetectEngineThreadCtx *det_ctx,
     return buffer;
 }
 
-static InspectionBuffer *GetData2(DetectEngineThreadCtx *det_ctx,
-        const DetectEngineTransforms *transforms, Flow *_f, const uint8_t _flow_flags, void *txv,
-        const int list_id)
-{
-    SCEnter();
-
-    InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id);
-    if (buffer->inspect == NULL) {
-        uint32_t b_len = 0;
-        const uint8_t *b = NULL;
-
-        if (rs_http2_tx_get_status(txv, &b, &b_len) != 1)
-            return NULL;
-        if (b == NULL || b_len == 0)
-            return NULL;
-
-        InspectionBufferSetup(det_ctx, list_id, buffer, b, b_len);
-        InspectionBufferApplyTransforms(buffer, transforms);
-    }
-
-    return buffer;
-}
-
 #ifdef UNITTESTS
 #include "tests/detect-http-stat-msg.c"
 #endif /* UNITTESTS */