chore: Remove broken MV3 perf stats (#29408)

## **Description**

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.

[![Open in GitHub
Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/MetaMask/metamask-extension/pull/29408?quickstart=1)

## **Related issues**

Relates to #28572

## **Manual testing steps**

Check that the `metamaskbot` comment no longer has the links to these
broken reports. They look like this:

- mv3: Background Module Init Stats
- mv3: UI Init Stats
- mv3: Module Load Stats

## **Screenshots/Recordings**

N/A

## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [x] I’ve included tests if applicable
- [x] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

.circleci/config.yml

@@ -278,9 +278,6 @@ workflows:
       - user-actions-benchmark:
           requires:
             - prep-build-test
-      - stats-module-load-init:
-          requires:
-            - prep-build-test
       - job-publish-prerelease:
           requires:
             - prep-deps
@@ -294,7 +291,6 @@ workflows:
             - prep-build-ts-migration-dashboard
             - benchmark
             - user-actions-benchmark
-            - stats-module-load-init
             - all-tests-pass
       - job-publish-release:
           filters:
@@ -1271,44 +1267,6 @@ 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",