fix mem leak

source/libs/catalog/src/catalog.c

@@ -540,12 +540,6 @@ int32_t catalogGetHandle(uint64_t clusterId, SCatalog** catalogHandle) {
       CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
     }
 
-    SHashObj *metaCache = taosHashInit(gCtgMgmt.cfg.maxTblCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
-    if (NULL == metaCache) {
-      qError("taosHashInit failed, num:%d", gCtgMgmt.cfg.maxTblCacheNum);
-      CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
-    }
-    
     code = taosHashPut(gCtgMgmt.pCluster, &clusterId, sizeof(clusterId), &clusterCtg, POINTER_BYTES);
     if (code) {
       if (HASH_NODE_EXIST(code)) {