pod template: remove redundant parameter
pod template: remove redundant parameter

The cluster configuration parameter is not in use in the
`getRequiredCapabilities` function.

Furthermore, inline the usage of the aforementioned function - there is
no reason to use a variable.

Signed-off-by: Miguel Duarte Barroso <c798d3f0e4fda7badfc3bbd91babde7ebd48b6c2@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt