test: Drop timedatex disabling in check-system-info
test: Drop timedatex disabling in check-system-info

We want to test OSes as they come by default and how they are supposed
to be used. So stop swapping out timedatex with systemd-timedated.

This only affects Fedora 30. The test already gets skipped on RHEL, and
timedatex got finally dropped by default in Fedora 31.

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