net: sockets: Remove TI conditional from offloaded fcntl implementation

Offloaded `fcntl` implementation should be available for all offloaded
implementations, not specific for TI. `socket_offload.c` is already
conditionally compiled based on `CONFIG_NET_SOCKETS_OFFLOAD` option, so
there should not be conflicts for non-offloaded interfaces.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>

subsys/net/lib/sockets/socket_offload.c

@@ -20,7 +20,6 @@ void socket_offload_register(const struct socket_offload *ops)
 	socket_ops = ops;
 }
 
-#ifdef CONFIG_SOC_FAMILY_TISIMPLELINK
 int fcntl(int fd, int cmd, ...)
 {
 	__ASSERT_NO_MSG(socket_ops);
@@ -35,4 +34,3 @@ int fcntl(int fd, int cmd, ...)
 
 	return res;
 }
-#endif