stop overriding max concurrency in CI, let automax procs handle it

Author: BenTheElder

hack/jenkins/test-dockerized.sh

@@ -40,7 +40,6 @@ export KUBE_COVER="n"
 export ARTIFACTS=${ARTIFACTS:-"${WORKSPACE}/artifacts"}
 # Save the verbose stdout as well.
 export KUBE_KEEP_VERBOSE_TEST_OUTPUT=y
-export KUBE_INTEGRATION_TEST_MAX_CONCURRENCY=4
 export LOG_LEVEL=4
 
 cd "${GOPATH}/src/k8s.io/kubernetes"

hack/jenkins/test-integration-dockerized.sh

@@ -36,7 +36,6 @@ export KUBE_COVER="n"
 export ARTIFACTS=${ARTIFACTS:-"${WORKSPACE}/artifacts"}
 # Save the verbose stdout as well.
 export KUBE_KEEP_VERBOSE_TEST_OUTPUT=y
-export KUBE_INTEGRATION_TEST_MAX_CONCURRENCY=4
 export LOG_LEVEL=4
 
 cd "${GOPATH}/src/k8s.io/kubernetes"