Remove k8s-upgrade script as upgrade-ab is now used instead

tests/e2e/scenarios/k8s-upgrade/run-test.sh

@@ -1,48 +0,0 @@
-#!/usr/bin/env bash
-
-# Copyright 2020 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-REPO_ROOT=$(git rev-parse --show-toplevel);
-source "${REPO_ROOT}"/tests/e2e/scenarios/lib/common.sh
-
-PATH=$REPO_ROOT/bazel-bin/cmd/kops/$(go env GOOS)-$(go env GOARCH):$PATH
-KOPS=${REPO_ROOT}/bazel-bin/cmd/kops/linux-amd64/kops
-
-${KUBETEST2} --build --kops-root="${REPO_ROOT}" --kops-binary-path="${KOPS}" --stage-location="${STAGE_LOCATION:-}"
-
-${KUBETEST2} \
-	--up \
-	--kops-binary-path="${KOPS}" \
-	--kubernetes-version=v1.19.10 \
-	--create-args="--networking calico"
-
-kops set cluster "${CLUSTER_NAME}" cluster.spec.kubernetesVersion=v1.20.6
-kops update cluster
-kops update cluster --admin --yes
-kops update cluster
-
-kops rolling-update cluster
-kops rolling-update cluster --yes --validation-timeout 30m
-
-kops validate cluster
-
-${KUBETEST2} \
-		--cloud-provider="${CLOUD_PROVIDER}" \
-		--kops-binary-path="${KOPS}" \
-		--test=kops \
-		-- \
-		--test-package-version=v1.20.6 \
-		--parallel 25 \
-		--skip-regex="\[Slow\]|\[Serial\]|\[Disruptive\]|\[Flaky\]|\[Feature:.+\]|\[HPA\]|Dashboard|RuntimeClass|RuntimeHandler|TCP.CLOSE_WAIT|Projected.configMap.optional.updates"