tests: remove object separation mark from eof

End of file should not end with --- mark. This will confuse tools like
yq and kubectl that might think this is another object.

Signed-off-by: Beraldo Leal <bleal@redhat.com>

tests/integration/kubernetes/runtimeclass_workloads/pod-sandbox-vcpus-allocation.yaml

@@ -51,4 +51,3 @@ spec:
         cpu: "1.2"
     command: ['nproc', '--all']
   restartPolicy: Never
----