optimize test_c_api.cpp (#6637)

* optimize test_c_api.cpp
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* clean redundant file
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* change DIM to const
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* optimize test_c_api.cpp
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

* update reduce testcase
Signed-off-by: Nyudong.cai <yudong.cai@zilliz.com>

internal/core/src/segcore/collection_c.cpp

@@ -16,26 +16,18 @@
 CCollection
 NewCollection(const char* schema_proto_blob) {
     auto proto = std::string(schema_proto_blob);
-
     auto collection = std::make_unique<milvus::segcore::Collection>(proto);
-
-    // std::cout << "create collection " << collection->get_collection_name() << std::endl;
-
     return (void*)collection.release();
 }
 
 void
 DeleteCollection(CCollection collection) {
     auto col = (milvus::segcore::Collection*)collection;
-
-    // std::cout << "delete collection " << col->get_collection_name() << std::endl;
-
     delete col;
 }
 
 const char*
 GetCollectionName(CCollection collection) {
     auto col = (milvus::segcore::Collection*)collection;
-
     return strdup(col->get_collection_name().data());
 }

internal/core/unittest/test_utils/DataGen.cpp

-// Copyright (C) 2019-2020 Zilliz. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
-// with the License. You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software distributed under the License
-// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-// or implied. See the License for the specific language governing permissions and limitations under the License
-
-//
-// Created by mike on 1/21/21.
-//