[Joker]

The H, or in our case A may be attached by two rivets. I'll have to look into it.
The other badges are held on by two sided tape. You can remove them with dental floss, and cleaner wax (to remover the left over glue from the tape).
I did this on my Civic Si, and it looked nice and clean. I have been thinking of doing the same on my TSX, but have for now left the badges on.

 

[Joker]

The "Acura", and "TSX" badges can be removed as stated.. But the "A" will leave you with two holes.

 

[Joker]

All the badges give the rear of the car a clustered look. I am undecided about the TSX, so for now have left them on.
But with my Si, it looked much more clean (smooth) without the two badges (Civic, and Si).