cert-manager: Decommission cert-exporter

The `cert-exporter` is no longer needed.  All websites manage their own
certificates with _mod_md_ now, and all internal applications that use
the wildcard certificate fetch it directly from the Kubernetes Secret.

cert-manager/kustomization.yaml

@@ -5,19 +5,10 @@ resources:
 - https://github.com/cert-manager/cert-manager/releases/download/v1.16.4/cert-manager.yaml
 - cluster-issuer.yaml
 - certificates.yaml
-- cert-exporter.yaml
 - dch-ca-issuer.yaml
 - secrets.yaml
 - jenkins.yaml
 
-configMapGenerator:
-- name: cert-exporter
-  namespace: cert-manager
-  files:
-  - config.yml=cert-exporter.config.yml
-  options:
-    disableNameSuffixHash: True
-
 secretGenerator:
 - name: zerossl-eab
   namespace: cert-manager
@@ -26,12 +17,6 @@ secretGenerator:
   options:
     disableNameSuffixHash: true
 
-- name: cert-exporter-sshkey
-  namespace: cert-manager
-  files:
-  - cert-exporter.pem
-  - ssh_known_hosts
-
 - name: cloudflare
   namespace: cert-manager
   files: