Remove prettier from dependencies (#33125)

Summary:
`prettier` should not be declared in dependencies in the ESLint config because it can trigger issues when a different version is installed on the client app.

`prettier` is already declared as `peerDependencies` and in the [README](https://github.com/facebook/react-native/blob/main/packages/eslint-config-react-native-community/README.md), it's explicitly asked to install it:

```
yarn add --dev eslint prettier react-native-community/eslint-config
```

## Changelog

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[General] [Fixed] - Remove prettier from dependencies in eslint-config

Pull Request resolved: #33125

Test Plan: - Install the package `react-native-community/eslint-config` and ensure everything works the same as before

Reviewed By: yungsters

Differential Revision: D34305118

Pulled By: ShikaSD

fbshipit-source-id: 65a3a79008cd5e28cc6aa93ef4a5032990b4e9f8

packages/eslint-config-react-native-community/package.json

@@ -22,8 +22,7 @@
     "eslint-plugin-prettier": "^4.0.0",
     "eslint-plugin-react": "^7.26.1",
     "eslint-plugin-react-hooks": "^4.2.0",
-    "eslint-plugin-react-native": "^3.11.0",
-    "prettier": "^2.4.1"
+    "eslint-plugin-react-native": "^3.11.0"
   },
   "peerDependencies": {
     "eslint": ">=7",