[Protractor] Remove packages/operator-lifecycle-manager/integration-tests

dev-console and knative-plugin static packages have Protractor tests that utilize the views in packages/operator-lifecycle-manager/integration-tests. Once the dev-console and knative-plugin Protractor tests have been removed or migrated, remove packages/operator-lifecycle-manager/integration-tests.

AC:

• remove packages/operator-lifecycle-manager/integration-tests once dev-console and knative-plugin Protractor tests have been removed or migrated