pci: Drop pci_init_board()

With the conversion to driver model, this is not needed now. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/init.h

@@ -297,9 +297,6 @@ int board_late_init(void);
 int board_postclk_init(void); /* after clocks/timebase, before env/serial */
 int board_early_init_r(void);
 
-/* TODO(sjg@chromium.org): Drop this when DM_PCI migration is completed */
-void pci_init_board(void);
-
 /**
  * arch_initr_trap() - Init traps
  *