I've removed TS from projects before and never looked back.
All the biggest benefits can be had with JSDoc (types documentation, intellisense and code-completion, IDE console warnings), but with zero costs (there's nothing to install and configure, never any obscure roadblocks, source code is valid JavaScript that doesn't need to be compiled first, app bundle is free of all the extraneous stuff from the compiler).
It's critical to remember that TS guarantees nothing about runtime safety, you still have to write defensive code no matter how much TS syntax you smear all over your codebase.