Remove build_ios and use only test_ios (#33837)

Summary:
build_ios is a subset of test_ios.
The Hermes cache takes 20-30 minutes to be downloaded and unarchived, that is the slowest part of both the jobs and that was duplicated.
This means that if we remove build_ios we save a lot of time, and the CI is still covering the build and the testing of the code.

## Changelog

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[Internal] - Remove build_ios and use only test_ios

Pull Request resolved: https://github.com/facebook/react-native/pull/33837

Test Plan: Checked on CircleCI

Reviewed By: cipolleschi

Differential Revision: D36437775

Pulled By: f-meloni

fbshipit-source-id: 53adf77e3511963d2dbfadf26122fd70b0de1113

.circleci/config.yml

@@ -399,64 +399,6 @@ jobs:
       - store_test_results:
           path: ./reports/junit
 
-  # -------------------------
-  #     JOBS: Build iOS
-  # -------------------------
-  build_ios:
-    executor: reactnativeios
-    parameters:
-      use_frameworks:
-        type: boolean
-        default: false
-    steps:
-      - checkout
-      - setup_ruby
-      - run_yarn
-
-      - run: |
-          cd packages/rn-tester
-          bundle check || bundle install
-
-      - run:
-          name: Configure Environment Variables
-          command: |
-            echo 'export PATH=/usr/local/opt/node@16/bin:$PATH' >> $BASH_ENV
-            source $BASH_ENV
-
-      - run:
-          name: Configure Watchman
-          command: echo "{}" > .watchmanconfig
-
-      - when:
-          condition: << parameters.use_frameworks >>
-          steps:
-            - run:
-                name: Set USE_FRAMEWORKS=1
-                command: echo "export USE_FRAMEWORKS=1" >> $BASH_ENV
-
-      - run:
-          name: Set USE_HERMES=1
-          command: echo "export USE_HERMES=1" >> $BASH_ENV
-
-      - run:
-          name: Set BUILD_HERMES_SOURCE=1
-          command: echo "export BUILD_HERMES_SOURCE=1" >> $BASH_ENV
-
-      - brew_install:
-          package: cmake
-
-      - run:
-          name: Setup the CocoaPods environment
-          command: bundle exec pod setup
-
-      - with_hermes_sdk_cache_span:
-          steps:
-            - with_rntester_pods_cache_span:
-                steps:
-                  - run:
-                      name: Generate RNTesterPods Workspace
-                      command: cd packages/rn-tester && bundle exec pod install --verbose
-
   # -------------------------
   #     JOBS: iOS Unit Tests
   # -------------------------
@@ -1296,15 +1238,9 @@ workflows:
           requires:
             - build_npm_package
       - test_ios_rntester
-      - build_ios
       - test_ios:
           run_unit_tests: true
-          requires:
-            - build_ios
       # DISABLED: USE_FRAMEWORKS=1 not supported by Flipper
-      # - build_ios:
-      #     name: build_ios_frameworks
-      #     use_frameworks: true
       # - test_ios:
       #     name: test_ios_frameworks
       #     use_frameworks: true