runtime-install: drop tigervnc

anaconda dropped VNC support in
rhinstaller/anaconda#5829 . There is no
point to having these any more, and they pull Xorg and its deps
into the image unnecessarily.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

Author: AdamWill

share/templates.d/99-generic/runtime-install.tmpl

@@ -122,8 +122,6 @@ installpkg selinux-policy-targeted audit
 
 ## network tools/servers
 installpkg ethtool openssh-server nfs-utils openssh-clients
-installpkg tigervnc-server-minimal
-installpkg tigervnc-server-module
 installpkg net-tools
 installpkg bridge-utils
 installpkg nmap-ncat