configs: imx8mp_venice: remove unnecessary FEC_QUIRK_ENET_MAC

FEC_QUIRK_ENET_MAC is defined in the imx-regs.h include file and thus
does not need to be defined in the various board config includes.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/include/configs/imx8mp_venice.h b/include/configs/imx8mp_venice.h
index 9f4c1b1..455f5a8 100644
--- a/include/configs/imx8mp_venice.h
+++ b/include/configs/imx8mp_venice.h
@@ -80,7 +80,4 @@
 #define PHYS_SDRAM                      0x40000000
 #define PHYS_SDRAM_SIZE			SZ_4G
 
-/* FEC */
-#define FEC_QUIRK_ENET_MAC
-
 #endif