Remove storage_abstraction directory from include pathname which is not supported in mbed sdk builds

Author: simonqhughes

hal/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_MCU_K64F/storage_driver.c

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-#include "storage_abstraction/Driver_Storage.h"
+#include "Driver_Storage.h"
 #include "cmsis_nvic.h"
 #include "MK64F12.h"