[RTOS Message Buffer API]
void vMessageBufferDelete( MessageBufferHandle_t xMessageBuffer );
Deletes a message buffer that was previously created using a call to xMessageBufferCreate() or xMessageBufferCreateStatic(). If the message buffer was created using dynamic memory (that is, by xMessageBufferCreate()), then the allocated memory is freed.
A message buffer handle must not be used after the message buffer has been deleted.
Message buffer functionality is enabled by including the FreeRTOS/source/stream_buffer.c source file in the build (as message buffers use stream buffers).
xMessageBuffer The handle of the message buffer to be deleted.