what kind of efforts?
Colin Campbell and sports journalists have articulated the idea with increasing frequency that fighting adds nothing to the sport and should be banned.
Fighting in ice hockey
Some league administrators, such as former NHL senior vice-president and director of hockey operations Colin Campbell, have been circulating the idea of banning fighting in response to incidents such as the Fedoruk–Orr fight.

Sports journalists have articulated the idea with increasing frequency that fighting adds nothing to the sport and should be banned.
when are you allowed to fight in hockey The debate over allowing fighting in ice hockey games is ongoing. does it have any effect on game? Statistics indicate that fights are detrimental to teams' play, or have inconsequential benefits. were there any efforts to ban it? Yes
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Fighting in ice hockey [SEP] Efforts to ban fighting
The "Journal of Sport and Social Issues"' Ryan T. Lewinson and Oscar E. Palma believe that fighting shows a lack of discipline on the part of participants, as well as a lack of fairness in certain cases, including when fighters have a size disparity. However, supporters of fighting say it provides a means of security for players, that fighting is a tool players use to keep opposing players in check; essentially allowing players to police which hits and dirty plays are unacceptable.