teams/cloud/container: Drop zstd from Toolbx

The zstd RPM is neither part of the default Fedora Silverblue
and Workstation installation [1], nor the Container/Dockerfile and
Kickstart equivalents of the fedora-toolbox images [2,3].  Therefore,
there's no need to need to include it in the KIWI description.

Fallout from d27e4c3f6c

[1] https://pagure.io/fedora-comps/

[2] https://src.fedoraproject.org/container/fedora-toolbox
    https://github.com/containers/toolbox/tree/main/images/fedora

[3] https://pagure.io/fedora-kickstarts/blob/main/f/fedora-container-toolbox.ks

https://pagure.io/fedora-kiwi-descriptions/pull-request/21

teams/cloud/container.xml

@@ -222,7 +222,6 @@
 		<package name="xorg-x11-xauth"/>
 		<package name="xz"/>
 		<package name="zip"/>
-		<package name="zstd"/>
 	</packages>
 	<packages type="uninstall" profiles="Container-Toolbox">
 		<package name="kbd-misc"/>