Remove unused dependency vscode-languageclient (tailwindlabs#527)

This dependency is unused by the language service.

Author: remcohaszing

packages/tailwindcss-language-service/package-lock.json

@@ -31,7 +31,6 @@
     "stringify-object": "3.3.0",
     "tmp-cache": "1.1.0",
     "vscode-emmet-helper-bundled": "0.0.1",
-    "vscode-languageclient": "7.0.0",
     "vscode-languageserver": "7.0.0",
     "vscode-languageserver-textdocument": "1.0.1"
   },