ci: remove Node v10

Node v10 is no longer supported by the Node.js team and it is difficult to keep CI green when the NPM infrastructure underneath the CLI is no longer expected to maintain Node v10 support.

Author: dgp1130

.circleci/config.yml

@@ -204,22 +204,6 @@ jobs:
             mkdir /mnt/ramdisk/e2e-yarn
             PATH=~/.npm-global/bin:$PATH node ./tests/legacy-cli/run_e2e --nb-shards=${CIRCLE_NODE_TOTAL} --shard=${CIRCLE_NODE_INDEX} <<# parameters.ve >>--ve<</ parameters.ve >> <<# parameters.snapshots >>--ng-snapshots<</ parameters.snapshots >> --yarn --tmpdir=/mnt/ramdisk/e2e-yarn --glob="{tests/basic/**,tests/update/**,tests/commands/add/**}"
 
-  e2e-cli-node-10:
-    executor:
-      name: test-executor
-      nodeversion: "10.20"
-    parallelism: 4
-    steps:
-      - custom_attach_workspace
-      - browser-tools/install-chrome
-      - run:
-          name: Initialize Environment
-          command: |
-            ./.circleci/env.sh
-            # Ensure latest v6 npm version to support local package repository
-            PATH=~/.npm-global/bin:$PATH npm install --global npm@6
-      - run: PATH=~/.npm-global/bin:$PATH node ./tests/legacy-cli/run_e2e --nb-shards=${CIRCLE_NODE_TOTAL} --shard=${CIRCLE_NODE_INDEX}
-
   e2e-cli-node-14:
     executor:
       name: test-executor
@@ -381,10 +365,6 @@ workflows:
               only:
                 - renovate/angular
                 - master
-      - e2e-cli-node-10:
-          <<: *only_release_branches
-          requires:
-            - e2e-cli
       - e2e-cli-node-14:
           <<: *only_release_branches
           requires: