Palenight Theme extension isn't referring to valid VSIX file

[kburtram]

It looks like this extension has been removed at its source. So we should remove from the gallery.

Error: /home/runner/work/azuredatastudio/azuredatastudio/extensionsGallery.json - palenight-theme-dataazurestudio-version - Error fetching Microsoft.SQLOps.DownloadPage with URL https://github.com/joserocha/azdatastudio-material-palenight-theme/releases/tag/0.0.2. HTTPError: Response code 404 (Not Found)
at validateExtensionFile (file:///home/runner/work/azuredatastudio/azuredatastudio/scripts/validateGalleries.js:530:19)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
at async validateVersion (file:///home/runner/work/azuredatastudio/azuredatastudio/scripts/validateGalleries.js:283:9)
at async validateExtension (file:///home/runner/work/azuredatastudio/azuredatastudio/scripts/validateGalleries.js:200:5)
at async Promise.all (index 23)
at async validateResult (file:///home/runner/work/azuredatastudio/azuredatastudio/scripts/validateGalleries.js:163:5)
at async validateExtensionGallery (file:///home/runner/work/azuredatastudio/azuredatastudio/scripts/validateGalleries.js:151:5)
at async Promise.all (index 0)
at async file:///home/runner/work/azuredatastudio/azuredatastudio/scripts/validateGalleries.js:693:1

[lewis-sanchez]

Palenight theme extensino was removed from the extension gallery in this PR: #26182