Remove unnecessary override

Author: KodaiD

core/src/integration-test/java/com/scalar/db/storage/jdbc/JdbcAdminImportTableIntegrationTest.java

@@ -6,7 +6,6 @@
 import com.scalar.db.api.TableMetadata;
 import com.scalar.db.exception.storage.ExecutionException;
 import com.scalar.db.io.DataType;
-import com.scalar.db.util.AdminTestUtils;
 import java.sql.SQLException;
 import java.util.Collections;
 import java.util.List;
@@ -69,11 +68,6 @@ protected void dropNonImportableTable(String table) throws SQLException {
     testUtils.dropTable(getNamespace(), table);
   }
 
-  @Override
-  protected AdminTestUtils getAdminTestUtils(String testName) {
-    return new JdbcAdminTestUtils(getProperties(testName));
-  }
-
   @SuppressWarnings("unused")
   private boolean isOracle() {
     return JdbcEnv.isOracle();