Improve hack/generate-deploy-scripts.sh to no longer generate versioned manifests (#8877)

* feat: no longer generate versioned manifests

Updates the script to no longer generate multiple versioned deploy manifests.
The script will only generate the manifests for one given version of
Kubernetes.

See: #8824

Signed-off-by: Ismayil Mirzali <[email protected]>

* fix: delete unnecessary versioned deploy manifests

See: #8824

Signed-off-by: Ismayil Mirzali <[email protected]>

Author: Volatus