usb: dwc2: pci: Drop the empty quirk function

The function dwc2_pci_quirks() does nothing. Removing.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Minas Harutyunyan <hminas@synopsys.com>
Link: https://lore.kernel.org/r/20210204141711.53775-3-heikki.krogerus@linux.intel.com


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