I removed TypeScript by hand.
- Right-click on the Web-project file in the Solution Explorer and choose
Unload project
- Right-click again on the project file, and now choose
Edit {project-name}.csproj
- Remove all elements with the name
TypeScript
in it, and save the XML file - Right-click the project file, and choose
Reload project
Always keep a backup of the project file, as you may wreck it. Your millage may vary...