When running the command `openshift-install destroy cluster` with `openshift-install v4.16.0` to uninstall an IPI cluster, the directory `.clusterapi_output` is not deleted and remains in the installation directory.

$ openshift-install version
openshift-install 4.16.0
built from commit 0dc3033888f4cae22e5e5897921422f7180c4033
release image quay.io/openshift-release-dev/ocp-release@sha256:3717338045df06e31effea46761b2c7e90f543cc4f00547af8158dd6aea868c3
release architecture amd64

everytime   

$ ls -la
total 4
drwxr-xr-x. 1 ec2-user ec2-user  290 Jul  9 10:11 .
drwxr-xr-x. 1 ec2-user ec2-user  642 Jul  9 09:42 ..
-rwxr-xr-x. 1 ec2-user ec2-user 3759 Jul  9 09:43 install-config.yaml

$ openshift-install create cluster --dir=. --log-level=info
INFO Credentials loaded from the "default" profile in file "/home/ec2-user/.aws/credentials" 
INFO Consuming Install Config from target directory 

[...] 

INFO Install complete!                            
INFO To access the cluster as the system:admin user when using 'oc', run 'export KUBECONFIG=/home/ec2-user/OpenShift/install/auth/kubeconfig' 
INFO Access the OpenShift web-console here: https://console-openshift-console.apps.ec2-user-red.apac.aws.cee.support 
INFO Login to the console with user: "kubeadmin", and password: "XXXXX-XXXXX-XXXXX-XXXXX" 
INFO Time elapsed: 49m36s     

$ ls -la
total 6828
drwxr-xr-x. 1 ec2-user ec2-user     290 Jul  9 10:11 .
drwxr-xr-x. 1 ec2-user ec2-user     642 Jul  9 09:42 ..
drwxr-x---. 1 ec2-user ec2-user      56 Jul  9 09:44 auth
drwxr-x---. 1 ec2-user ec2-user    1908 Jul  9 10:11 .clusterapi_output
-rw-r-----. 1 ec2-user ec2-user     444 Jul  9 09:44 metadata.json
-rw-r--r--. 1 ec2-user ec2-user 1797755 Jul  9 10:33 .openshift_install.log
-rw-r-----. 1 ec2-user ec2-user 4877453 Jul  9 09:50 .openshift_install_state.json
-rw-r-----. 1 ec2-user ec2-user    1335 Jul  9 09:44 terraform.platform.auto.tfvars.json
-rw-r-----. 1 ec2-user ec2-user  305166 Jul  9 09:44 terraform.tfvars.json
drwxr-x---. 1 ec2-user ec2-user      80 Jul  9 09:44 tls


$ openshift-install destroy cluster --dir=. --log-level=info
INFO Credentials loaded from the "default" profile in file "/home/ec2-user/.aws/credentials" 
INFO Terminated                                    instance=i-0b76410f3e5829c9c

[...]

INFO Deleted                                       id=vpc-0b2c29e78b084c207 resourceType=vpc
INFO Time elapsed: 5m38s                          
INFO Uninstallation complete!                     
 
$ ls -la
total 1800
drwxr-xr-x. 1 ec2-user ec2-user      80 Jul  9 10:39 .
drwxr-xr-x. 1 ec2-user ec2-user     642 Jul  9 09:42 ..
drwxr-x---. 1 ec2-user ec2-user      88 Jul  9 10:39 .clusterapi_output
-rw-r--r--. 1 ec2-user ec2-user 1839931 Jul  9 10:39 .openshift_install.log

This directory is generated due to changes in ClusterAPI, but if it is not used after uninstalling, it should be deleted during the uninstall process.
Additionally, if this directory is left and you try to place a new `install-config.yaml` and run `openshift-install create cluster` again, the cluster installation fails with an error.

$ openshift-install create cluster --dir=. --log-level=info
INFO Credentials loaded from the "default" profile in file "/home/ec2-user/.aws/credentials" 
WARNING Making control-plane schedulable by setting MastersSchedulable to true for Scheduler cluster settings 
INFO Consuming Install Config from target directory 
FATAL failed to fetch Cluster: failed to load asset "Cluster": local infrastructure provisioning artifacts already exist. There may already be a running cluster