refactor: remove vscode 'formatOnSave'

This commit ensures that the `formatOnSave` variable is not set. This
needs to be done since people have different prefered formatters. With `formatOnSave`
included this will cause code to be formatted on save with different
formatters than prettier.

.vscode/settings.json

@@ -1,4 +1,3 @@
 {
     "markdown.extension.toc.levels": "1..3",
-    "editor.formatOnSave": true
 }