Remove btu_api.h

Empty file is empty.

Test: compiles
Change-Id: Ie6fda095a7b740a5f8e00f68da52a608d0b6d5fe
diff --git a/src/include/btu_api.h b/src/include/btu_api.h
deleted file mode 100644
index 83c7d87..0000000
--- a/src/include/btu_api.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/******************************************************************************
- *
- *  Copyright (C) 1999-2012 Broadcom Corporation
- *
- *  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.
- *
- ******************************************************************************/
-#ifndef BTU_API_H
-#define BTU_API_H
-#endif /* BTU_APU_H */
diff --git a/src/nfc/int/nfc_int.h b/src/nfc/int/nfc_int.h
index 8ceeeae..285767b 100644
--- a/src/nfc/int/nfc_int.h
+++ b/src/nfc/int/nfc_int.h
@@ -31,7 +31,6 @@
 #include "gki.h"
 #include "nci_defs.h"
 #include "nfc_api.h"
-#include "btu_api.h"
 
 #ifdef __cplusplus
 extern "C" {