fix: remove unused extensions

.vscode/extensions.json

@@ -1,7 +1,5 @@
 {
   "recommendations": [
-    "ms-vscode-remote.remote-containers",
-    "ms-azuretools.vscode-docker",
     "editorconfig.editorconfig",
     "njpwerner.autodocstring",
     "ms-python.python"

.vscode/settings.json

@@ -24,17 +24,5 @@
     "**/__pycache__": true,
     "**/.mypy_cache": true,
   },
-  "yaml.schemas": {
-    "gameconfig.schema.json": [
-      "*.gameconfig.yml"
-    ]
-  },
-  "json.schemas": [
-    {
-      "fileMatch": [
-        "*.schema.json"
-      ],
-      "url": "https://json-schema.org/draft/2020-12/schema"
-    }
-  ]
+  "nixEnvSelector.nixFile": "${workspaceRoot}/shell.nix",
 }