OMAP3 Beagle: Minor config cleanup

This patch removes a hardcoded MAC address

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

include/configs/omap3_beagle.h

@@ -215,7 +215,6 @@
 	"loadaddr=0x80200000\0" \
 	"rdaddr=0x81000000\0" \
 	"usbtty=cdc_acm\0" \
-	"usbethaddr=de:ad:be:ef\0" \
 	"bootfile=uImage.beagle\0" \
 	"console=ttyS2,115200n8\0" \
 	"mpurate=auto\0" \