usb: gadget: udc: atmel_usba: remove bind/unbind messages

now that we provide generic register/unregister
debugging messages from udc-core, we can remove
the same messages from this driver.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --cc drivers/usb/gadget/udc/atmel_usba_udc.c
Simple merge