tunnels: Set tunnel init.d scripts to be executable

Remove the chmod step inside of setup.

Came across one time where this didn't trigger.

In addition this saves us from using additional storage space on the node as a +x creates a duplicate file.

files/www/cgi-bin/tunfunc.pm

@@ -215,10 +215,6 @@ sub install_vtun
                 # allow port 5525 for server connections
                 open_5525_on_wan();
 
-                # enable init.d scripts
-                system("chmod +x /etc/init.d/vtundsrv");
-                system("chmod +x /etc/init.d/vtund");
-
                 # create UCI config file
                 system("touch /etc/config/vtun");
                 # create options section