ARM: zynq: Remove CONFIG_BOOTP_SERVERIP

Do the same change which was done in ZynqMP by:
"ARM64: zynqmp: Remove CONFIG_BOOTP_SERVERIP"
(sha1: a8b6a156)
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

include/configs/zynq-common.h

@@ -43,7 +43,6 @@
 # define CONFIG_PHY_MARVELL
 # define CONFIG_PHY_REALTEK
 # define CONFIG_PHY_XILINX
-# define CONFIG_BOOTP_SERVERIP
 # define CONFIG_BOOTP_BOOTPATH
 # define CONFIG_BOOTP_GATEWAY
 # define CONFIG_BOOTP_HOSTNAME