Bump versions in the release branch to 2.0.2 and cleanup OLM bundles of older releases

* Certified OLM bundles are already maintained in the certified-operators repo
* Avoids confusion between release branch and main branch

Signed-off-by: Shiva Krishna, Merla <smerla@nvidia.com>

Author: shivamerla

bundle/manifests/k8s-nim-operator.clusterserviceversion.yaml

@@ -1,7 +1,7 @@
 apiVersion: operators.coreos.com/v1alpha1
 kind: ClusterServiceVersion
 metadata:
-  name: nim-operator-certified.v2.0.0
+  name: nim-operator-certified.v2.0.2
   namespace: placeholder
   labels:
     operatorframework.io/arch.amd64: supported
@@ -503,8 +503,8 @@ spec:
     * NeMo Entity Store
 
   maturity: stable
-  version: 2.0.0
-  replaces: 'nim-operator-certified.v1.0.1'
+  version: 2.0.2
+  replaces: 'nim-operator-certified.v2.0.1'
   skips: []
   minKubeVersion: 1.26.0
   keywords: []