remove dcd_get_frame_number()

src/portable/st/stm32f3/dcd_stm32f3.c

@@ -57,10 +57,6 @@ void dcd_set_address(uint8_t rhport, uint8_t dev_addr)
 void dcd_set_config (uint8_t rhport, uint8_t config_num)
 {}
 
-// Get current frame number
-uint32_t dcd_get_frame_number(uint8_t rhport)
-{ return 0; }
-
 bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc)
 {
   return false;