It wont cause the TCC to lockup if it's removed/missing. It will cause a much firmer & quicker TCC engagement.
Are you sure the TC you removed was a Lockup model?
The checkball capsule is normally removed when switching to a Non-Lockup TC.
If you install a Lockup TC into a Trans that's been converted to use a Non-lockup TC it will Lockup any time the engine is running.