[playground] Remove unnecessary fs package (#31292)

Seems like this was accidentally added.
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[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/facebook/react/pull/31292).
* #31293
* __->__ #31292
* #31291

compiler/apps/playground/package.json

@@ -28,7 +28,6 @@
     "@monaco-editor/react": "^4.4.6",
     "@playwright/test": "^1.42.1",
     "@use-gesture/react": "^10.2.22",
-    "fs": "^0.0.1-security",
     "hermes-eslint": "^0.14.0",
     "hermes-parser": "^0.22.0",
     "invariant": "^2.2.4",

compiler/apps/playground/yarn.lock

@@ -1942,11 +1942,6 @@ fs.realpath@^1.0.0:
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
   integrity sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==
 
-fs@^0.0.1-security:
-  version "0.0.1-security"
-  resolved "https://registry.yarnpkg.com/fs/-/fs-0.0.1-security.tgz#8a7bd37186b6dddf3813f23858b57ecaaf5e41d4"
-  integrity sha512-3XY9e1pP0CVEUCdj5BmfIZxRBTSDycnbqhIOGec9QYtmVH2fbLpj86CFWkrNOkt/Fvty4KZG5lTglL9j/gJ87w==
-
 fsevents@2.3.2:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.3.2.tgz#8a526f78b8fdf4623b709e0b975c52c24c02fd1a"