removing shard_args from chain as not doing sharding for cluster-api-actuator-pkg

Author: miyadav

ci-operator/step-registry/openshift/e2e/test/clusterinfra-qe/openshift-e2e-test-clusterinfra-qe-ref.yaml

@@ -22,10 +22,6 @@ ref:
     documentation: |-
       Indicates if the active cluster is an OpenShift cluster or a derivative (e.g., Hypershift, Microshift).
       A value of "true" means the cluster is OpenShift or a derivative, while "false" means it is not (e.g., AKS).
-  - name: SHARD_ARGS
-    default: ""
-    documentation: |-
-      Arguments to be passed to 'extended-platform-tests' regarding the sharding parameters of this run
   resources:
     requests:
       cpu: "1"