Merge branch 'update_gpuresource' into 'branch-0.4.0'

MS484 remove idmap search config

See merge request megasearch/milvus!486

Former-commit-id: f2af09bc81dcd999fbbb25d183a127f3893fdd98

cpp/src/core/src/knowhere/index/vector_index/idmap.cpp

@@ -39,9 +39,9 @@ DatasetPtr IDMAP::Search(const DatasetPtr &dataset, const Config &config) {
     }
 
     auto k = config["k"].as<size_t>();
-    auto metric_type = config["metric_type"].as_string() == "L2" ?
-                       faiss::METRIC_L2 : faiss::METRIC_INNER_PRODUCT;
-    index_->metric_type = metric_type;
+    //auto metric_type = config["metric_type"].as_string() == "L2" ?
+    //                   faiss::METRIC_L2 : faiss::METRIC_INNER_PRODUCT;
+    //index_->metric_type = metric_type;
 
     GETTENSOR(dataset)