build: remove legacy-unit-tests-local job (#28703)

Since all unit tests are now run with Bazel, we can remove
the local legacy unit tests job. We still need to keep the
Saucelabs legacy job until we can run all of these web
unit tests with Saucelabs and Bazel.

PR Close #28703

.circleci/config.yml

@@ -460,20 +460,6 @@ jobs:
           command: 'curl --request POST --header "Content-Type: application/json" --data "{\"text\":\":x: \`$CIRCLE_JOB\` job failed on build $CIRCLE_BUILD_NUM: $CIRCLE_BUILD_URL :scream:\"}" $SLACK_CARETAKER_WEBHOOK_URL'
           when: on_fail
 
-  legacy-unit-tests-local:
-    <<: *job_defaults
-    docker:
-      - image: *browsers_docker_image
-    steps:
-      - checkout:
-          <<: *post_checkout
-      - *restore_cache
-      - *init_environment
-      - *yarn_install
-      - run: yarn tsc -p packages
-      - run: yarn tsc -p modules
-      - run: yarn karma start ./karma-js.conf.js --single-run --browsers=ChromeNoSandbox
-
   legacy-unit-tests-saucelabs:
     <<: *job_defaults
     # In order to avoid the bottleneck of having a slow host machine, we acquire a better
@@ -527,7 +513,6 @@ workflows:
       - test_ivy_aot
       - build-npm-packages
       - test_aio
-      - legacy-unit-tests-local
       - legacy-unit-tests-saucelabs
       - deploy_aio:
           requires:
@@ -580,7 +565,6 @@ workflows:
             # since the publishing script expects the legacy outputs layout.
             - build-npm-packages
             - legacy-misc-tests
-            - legacy-unit-tests-local
             - legacy-unit-tests-saucelabs