refactor, mostly removing st bloat

targets/stm32l442/src/device.c

@@ -14,7 +14,6 @@ extern PCD_HandleTypeDef hpcd;
 // Global USB interrupt handler
 void USB_IRQHandler(void)
 {
-    /*printf("USB int !\r\n");*/
   HAL_PCD_IRQHandler(&hpcd);
 }
 

targets/stm32l442/src/init.c

@@ -199,7 +199,7 @@ void SystemClock_Config(void)
 
 static void usb_init()
 {
-    USBD_Init(&Solo_USBD_Device, &HID_Desc, 0);
+    USBD_Init(&Solo_USBD_Device, &Solo_Desc, 0);
     USBD_RegisterClass(&Solo_USBD_Device, &USBD_HID);
     USBD_Start(&Solo_USBD_Device);
 }