USB: serial: core: remove some trace debugging calls

These dbg() calls were no more than just a function trace, so remove
them.  If you want to see the functions being called, use the in-kernel
function trace code instead, it's much nicer.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/usb/serial/console.c
Simple merge

diff --cc drivers/usb/serial/usb-serial.c
Simple merge