That's a slight misreading of Chekhov's gun, to be honest, it's just a cautionary tale on superfluous narrative elements in theatre. Extra mise-en-scene can actually deepen an understanding of a character, so I don't even agree with the 'rule'.
Time limits are a firm fixture in Japanese wrestling but I can only recall one instance of a draw last year, and it was completely appropriate: Tanahashi v Okada in the G1 Climax event. Both guys were 2-2 in their personal rivalry and the draw helped set up both the even match between the two guys, and made their title match later that year come with a finality stipulation (if Tanahashi failed to win, he could not challenge Okada for the title again). The clock wasn't ever-present, you just hear the timekeeper announce that there is little time left, have the referee do his job and communicate the finish to the workers, it's easy and simple.
If you do it occasionally, yeah, it telegraphs the ending. If you do it all the time, it's just an available narrative element.