Remove hard-coded path in CMSIS_INCLUDE_DIR

The redundant line is removed.

cmake/FindCMSIS.cmake

@@ -69,7 +69,6 @@ FIND_PATH(CMSIS_DEVICE_INCLUDE_DIR ${CMSIS_DEVICE_HEADERS}
 SET(CMSIS_INCLUDE_DIRS
     ${CMSIS_DEVICE_INCLUDE_DIR}
     ${CMSIS_COMMON_INCLUDE_DIR}
-    ${STM32Cube_DIR}/Drivers/CMSIS/Device/ST/STM32F4xx/Include
 )
 
 FOREACH(SRC ${CMSIS_DEVICE_SOURCES})