chore: Remove broken MV3 module stats

Remove broken MV3 reports. These reports relied upon data from the
`mv3-perf-stats` E2E test job, which itself relied upon the
`user-data-dir` chromedriver setting removed in #24696. They have been
broken since that PR.

These reports were very useful in prioritizing MV3 work at the time,
but we haven't needed them recently.

The `mv3-stats` E2E test suite has also been removed (this is an older
version of `mv3-perf-stats` that has been unused for even longer),
along with the charts that were used for this report.

.circleci/config.yml

@@ -293,9 +293,6 @@ workflows:
       - user-actions-benchmark:
           requires:
             - prep-build-test
-      - stats-module-load-init:
-          requires:
-            - prep-build-test
       - job-publish-prerelease:
           requires:
             - prep-deps
@@ -309,7 +306,6 @@ workflows:
             - prep-build-ts-migration-dashboard
             - benchmark
             - user-actions-benchmark
-            - stats-module-load-init
             - all-tests-pass
       - job-publish-release:
           filters:
@@ -1331,44 +1327,6 @@ jobs:
           paths:
             - test-artifacts
 
-  stats-module-load-init:
-    executor: node-browsers-small
-    steps:
-      - run: *shallow-git-clone-and-enable-vnc
-      - run: sudo corepack enable
-      - attach_workspace:
-          at: .
-      - run:
-          name: Move test build to dist
-          command: mv ./dist-test ./dist
-      - run:
-          name: Move test zips to builds
-          command: mv ./builds-test ./builds
-      - run:
-          name: Run page load benchmark
-          command: |
-            mkdir -p test-artifacts/chrome/
-            cp -R development/charts/flamegraph test-artifacts/chrome/initialisation
-            cp -R development/charts/flamegraph/chart test-artifacts/chrome/initialisation/background
-            cp -R development/charts/flamegraph/chart test-artifacts/chrome/initialisation/ui
-            cp -R development/charts/table test-artifacts/chrome/load_time
-      - run:
-          name: Run page load benchmark
-          command: yarn mv3:stats:chrome --out test-artifacts/chrome
-      - run:
-          name: Install jq
-          command: sudo apt install jq -y
-      - run:
-          name: Record bundle size at commit
-          command: ./.circleci/scripts/bundle-stats-commit.sh
-      - store_artifacts:
-          path: test-artifacts
-          destination: test-artifacts
-      - persist_to_workspace:
-          root: .
-          paths:
-            - test-artifacts
-
   job-publish-prerelease:
     executor: node-browsers-medium
     steps:

.prettierignore

@@ -6,7 +6,6 @@ node_modules/**/*
 /app/vendor/**
 /builds/**/*
 /coverage/**/*
-/development/charts/**
 /development/chromereload.js
 /development/ts-migration-dashboard/filesToConvert.json
 /development/ts-migration-dashboard/build/**

.vscode/cspell.json

@@ -47,7 +47,6 @@
     "devcontainers",
     "endregion",
     "ensdomains",
-    "flamegraph",
     "FONTCONFIG",
     "hardfork",
     "hexstring",