remove unused code

src/sql/resolver/dcl/ob_dcl_stmt.h

@@ -1,40 +0,0 @@
-/**
- * Copyright (c) 2021 OceanBase
- * OceanBase CE is licensed under Mulan PubL v2.
- * You can use this software according to the terms and conditions of the Mulan PubL v2.
- * You may obtain a copy of Mulan PubL v2 at:
- *          http://license.coscl.org.cn/MulanPubL-2.0
- * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
- * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
- * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
- * See the Mulan PubL v2 for more details.
- */
-
-#ifndef OCEANBASE_SQL_RESOLVER_OB_DCL_STMT_H_
-#define OCEANBASE_SQL_RESOLVER_OB_DCL_STMT_H_ 1
-#include "share/ob_rpc_struct.h"
-#include "sql/resolver/ob_stmt.h"
-#include "sql/resolver/ob_cmd.h"
-namespace oceanbase
-{
-namespace sql
-{
-class ObDCLStmt : public ObStmt, public ObICmd
-{
-public:
-  ObDCLStmt(common::ObIAllocator *name_pool, stmt::StmtType type)
-    : ObStmt(name_pool, type)
-  {
-  }
-  explicit ObDCLStmt(stmt::StmtType type): ObStmt(type)
-  {
-  }
-  virtual ~ObDCLStmt() {}
-  virtual int get_cmd_type() const { return get_stmt_type(); }
-  virtual bool cause_implicit_commit() const { return true; }
-private:
-  DISALLOW_COPY_AND_ASSIGN(ObDCLStmt);
-};
-}  // namespace sql
-}  // namespace oceanbase
-#endif // OCEANBASE_SQL_RESOLVER_OB_DCL_STMT_H