Remove router gate on AWS installer PRs for now

[smarterclayton]

We will re-enable a more accurate signal for "cluster is ready" in
the near term. Until then we don't need this wait.

Enables us to merge openshift/installer#330 while we go through a period of churn in install.

[derekwaynecarr]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: derekwaynecarr, smarterclayton

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[openshift-ci-robot]

@smarterclayton: Updated the prow-job-cluster-launch-installer-e2e configmap using the following files:

• key cluster-launch-installer-e2e.yaml using file ci-operator/templates/cluster-launch-installer-e2e.yaml

Details

In response to this:

We will re-enable a more accurate signal for "cluster is ready" in
the near term. Until then we don't need this wait.

Enables us to merge openshift/installer#330 while we go through a period of churn in install.

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