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diff --git a/fw/hid-dials/Drivers/CMSIS/Include/tz_context.h b/fw/hid-dials/Drivers/CMSIS/Include/tz_context.h
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index d4c1474..0000000
--- a/fw/hid-dials/Drivers/CMSIS/Include/tz_context.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/******************************************************************************
- * @file tz_context.h
- * @brief Context Management for Armv8-M TrustZone
- * @version V1.0.1
- * @date 10. January 2018
- ******************************************************************************/
-/*
- * Copyright (c) 2017-2018 Arm Limited. All rights reserved.
- *
- * 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
- *
- * 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.
- */
-
-#if defined ( __ICCARM__ )
- #pragma system_include /* treat file as system include file for MISRA check */
-#elif defined (__clang__)
- #pragma clang system_header /* treat file as system include file */
-#endif
-
-#ifndef TZ_CONTEXT_H
-#define TZ_CONTEXT_H
-
-#include <stdint.h>
-
-#ifndef TZ_MODULEID_T
-#define TZ_MODULEID_T
-/// \details Data type that identifies secure software modules called by a process.
-typedef uint32_t TZ_ModuleId_t;
-#endif
-
-/// \details TZ Memory ID identifies an allocated memory slot.
-typedef uint32_t TZ_MemoryId_t;
-
-/// Initialize secure context memory system
-/// \return execution status (1: success, 0: error)
-uint32_t TZ_InitContextSystem_S (void);
-
-/// Allocate context memory for calling secure software modules in TrustZone
-/// \param[in] module identifies software modules called from non-secure mode
-/// \return value != 0 id TrustZone memory slot identifier
-/// \return value 0 no memory available or internal error
-TZ_MemoryId_t TZ_AllocModuleContext_S (TZ_ModuleId_t module);
-
-/// Free context memory that was previously allocated with \ref TZ_AllocModuleContext_S
-/// \param[in] id TrustZone memory slot identifier
-/// \return execution status (1: success, 0: error)
-uint32_t TZ_FreeModuleContext_S (TZ_MemoryId_t id);
-
-/// Load secure context (called on RTOS thread context switch)
-/// \param[in] id TrustZone memory slot identifier
-/// \return execution status (1: success, 0: error)
-uint32_t TZ_LoadContext_S (TZ_MemoryId_t id);
-
-/// Store secure context (called on RTOS thread context switch)
-/// \param[in] id TrustZone memory slot identifier
-/// \return execution status (1: success, 0: error)
-uint32_t TZ_StoreContext_S (TZ_MemoryId_t id);
-
-#endif // TZ_CONTEXT_H