samples: net: civetweb: Remove an unnecessary config option

CONFIG_NET_SOCKETS_POSIX_NAMES is incompatible with POSIX_API, so it's
disabled by the build system. It's no longer required anyway.

It is a leftover from before zephyrproject-rtos#16557 was merged.

Signed-off-by: Piotr Zierhoffer <[email protected]>

Author: PiotrZierhoffer

samples/net/sockets/civetweb/prj.conf

@@ -13,7 +13,6 @@ CONFIG_NET_IPV4=y
 # CONFIG_NET_IPV6 is not set
 CONFIG_NET_TCP=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POSIX_NAMES=y
 CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE=131072
 CONFIG_NET_TX_STACK_SIZE=8192
 CONFIG_NET_RX_STACK_SIZE=8192