Remove Polaris for Figma plugin from monorepo (#7637)

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### WHY are these changes introduced?

Fixes #7628  <!-- link to issue if one exists -->

<!--
  Context about the problem that’s being addressed.
-->

### WHAT is this pull request doing?

Removes the Polaris for Figma plugin from the monorepo. We can restore
this or work fresh and reference the source code if needed.

Author: sam-b-rose

.eslintrc.js

@@ -87,12 +87,6 @@ module.exports = {
         'import/no-default-export': 'off',
       },
     },
-    {
-      files: ['polaris-for-figma/src/**/*.{ts,tsx}'],
-      rules: {
-        '@shopify/jsx-no-hardcoded-content': 'off',
-      },
-    },
     {
       files: ['polaris-migrator/src/**/*.{ts,tsx}'],
       rules: {

README.md

@@ -14,12 +14,11 @@
 
 ## About this repo
 
-The shopify/polaris repository is an [intergalactic](https://www.youtube.com/watch?v=qORYO0atB6g) monorepo made up of NPM packages, VSCode extensions, Figma plugins and websites.
+The shopify/polaris repository is an [intergalactic](https://www.youtube.com/watch?v=qORYO0atB6g) monorepo made up of NPM packages, VSCode extensions, and websites.
 
 ```sh
 polaris/
 ├── documentation               # Documentation for working in the monorepo
-├── polaris-for-figma           # Figma plugin for Polaris
 ├── polaris-for-vscode          # VS Code extension for Polaris
 ├── polaris-icons               # Icons for Polaris
 ├── polaris-react               # Components for @shopify/polaris package

documentation/Releasing.md

@@ -24,14 +24,6 @@ To perform a release:
 
 > Note: Your feature branch PR should have **at least one** changeset. The snapshot release will only release packages with a pending changeset. More info on [adding a changeset](https://github.com/Shopify/polaris/blob/main/.github/CONTRIBUTING.md#adding-a-changeset).
 
-### [polaris-for-figma](/polaris-for-figma)
-
-You will need to have admin privileges in Figma to release the plugin.
-
-- Run the build step
-- In Figma navigate to the plugins menu
-- Click "Publish new release"
-
 ### [polaris-for-vscode](/polaris-for-vscode)
 
 - [Draft a new release](https://github.com/Shopify/polaris/releases)

jest.config.js

@@ -1,6 +1,5 @@
 module.exports = {
   projects: [
-    // '<rootDir>/polaris-for-figma',
     // '<rootDir>/polaris-for-vscode',
     '<rootDir>/polaris-icons',
     '<rootDir>/polaris-react',

package.json

@@ -9,7 +9,6 @@
     "packages": [
       "polaris-cli",
       "polaris-tokens",
-      "polaris-for-figma",
       "polaris-for-vscode",
       "polaris-icons",
       "polaris-migrator",