[NetUtils] Remove netutils Kconfig and folder. The latest netutils is on packages:netutils.

Author: armink

components/net/Kconfig

@@ -201,26 +201,6 @@ config LWIP_USING_DHCPD
     bool "Enable DHCP server"
     default n
 
-   
-menu "Networking utilities"
-config RT_USING_NETUTILS
-    bool "Enable networking utilities"
-    default n
-
-    if RT_USING_NETUTILS
-    config RT_NETUTILS_USING_PING
-        bool "Enable Ping utility"
-        select RT_LWIP_ICMP
-        select RT_LWIP_RAW
-        default n
-
-    config RT_NETUTILS_USING_TFTP
-        bool "Enable TFTP(Trivial File Transfer Protocol) utility"
-        default n
-    
-    endif
-endmenu
-
 endif
 
 endmenu