Days of Future Past: Part 2 - S1-E12
Blob: I'm gonna flatten these X-clowns by sittin' on 'em! (00:13:13)
Days of Future Past: Part 2 - S1-E12
Bishop: I should have known better than to play poker with an assassin.
Gambit: Shut up fool! [Throws a kinetically charged card at Bishop to no effect.]
Bishop: I can absorb your bio-energy and channel it right back.
Wolverine: I think he's getting ready to raise you.
Bishop: [Shoots an energy blast at Gambit which he narrowly avoids.] That's my mutant power.
Wolverine: [Extends his claws in Bishop's face.] How would you like to try absorbing these? Now sit down, both of you, or cards won't be the only thing that gets cut around here.
Answer: Chris Potter, the original Gambit voice actor, did indeed quit the role in the 4th season. His last episode was The Phalanx Covenant Part 1 so it seems reasonable that Fox would limit the use of the character even though it was recast. It doesn't appear that Potter left the role due to animosity, he stated in an interview that he wished to play Gambit in the first live action X-Men film.
BaconIsMyBFF