My bad! I didn't explain that very well.
What I was thinking was this -- let's say you have a maxed out TFSA, which would in 2015 be at $41,000. This has grown to $44,000.
I withdraw the entire amount, as OP plans to do (as I understand it, anyway.) This would not change the contribution room. If he withdraws $44,000, his limit will still be $41,000 for 2015, not $44,000. Correct?