Start moving code out of webusb and to Oryx feature

tmk_core/protocol/chibios/usb_main.c

@@ -880,7 +880,6 @@ void webusb_send(uint8_t *data, uint8_t length) {
     }
 }
 
-__attribute__((weak)) void webusb_receive_kb(uint8_t *data, uint8_t length) {
   // Users should #include "raw_hid.h" in their own code
   // and implement this function there. Leave this as weak linkage
   // so users can opt to not handle data coming in.

tmk_core/protocol/lufa/lufa.c

@@ -288,8 +288,6 @@ void webusb_send(uint8_t *data, uint8_t length) {
     Endpoint_ClearIN();
 }
 
-__attribute__((weak)) void webusb_receive_kb(uint8_t *data, uint8_t length) { }
-
 static void webusb_task(void) {
     // Create a temporary buffer to hold the read in data from the host
     uint8_t data[WEBUSB_EPSIZE];