It won’t (necessarily) take troops to remove Ghadaffi from power. It just needs a lucky hit with a large munition or a paid-off bodyguard.
Ghadaffi is the acme of a “one-hit-wonder”: one hit and you’ll wonder what all the fuss was all about.
Now America has (honorable) issues with deliberately targeting Heads of State, even when they are CinCs of their military forces and wear garish uniforms.
This need not be a problem. A willingness to kack Ghadaffi is something that the Allies bring to the party.
Actually there is an international agreement making it illegal to target the head of state from any country.