toolbox: drop standard and core from toolbox

standard pulls in sssd
core pulls in sssd-common
both of those pull in sssd-client, which is excluded in container-common
(to minimize size/deps).

If we need these, we can look at another solution.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

fedora-container-toolbox.ks

@@ -7,8 +7,6 @@
 
 # Install packages
 %packages --excludedocs --inst-langs=en --nocore --exclude-weakdeps
-@standard
-@core
 rootfiles
 tar # https://bugzilla.redhat.com/show_bug.cgi?id=1409920
 vim-enhanced