diff --git a/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_drv.c b/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_drv.c
deleted file mode 100644
index 0b7df1b2d5..0000000000
--- a/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_drv.c
+++ /dev/null
@@ -1,23 +0,0 @@
-/* Copyright (c) 2009-2019 Arm Limited
- * SPDX-License-Identifier: Apache-2.0
- *
- * 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.
- */
-
-#include "hci_mbed_os_adaptation.h"
-
-uint16_t hciDrvWrite(uint8_t type, uint16_t len, uint8_t *pData)
-{
-    // forward write to mbed os.
-    return hci_mbed_os_drv_write(type, len, pData);
-}
diff --git a/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_mbed_os_adaptation.h b/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_mbed_os_adaptation.h
index a0e9ea4cf6..843f479a04 100644
--- a/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_mbed_os_adaptation.h
+++ b/features/FEATURE_BLE/targets/TARGET_CORDIO/stack_adaptation/hci_mbed_os_adaptation.h
@@ -33,7 +33,6 @@ extern "C" {
  *
  * @note type parameter allows the driver layer to prepend the data with a
  * header on the same write transaction.
- * @note mbed os wrapper of hciDrvWrite
  */
 uint16_t hci_mbed_os_drv_write(uint8_t type, uint16_t len, uint8_t *pData);