[IRGen] NFC: Remove unused parameter from bindPolymorphicArgumentsFromComponentIndices
[IRGen] NFC: Remove unused parameter from bindPolymorphicArgumentsFromComponentIndices

This hasn't been used since 02b23d0d96b65299a390df83caf624a25dfc1dc7

JGiola/swift,benlangmuir/swift,roambotics/swift,JGiola/swift,JGiola/swift,JGiola/swift,glessard/swift,benlangmuir/swift,glessard/swift,roambotics/swift,glessard/swift,apple/swift,apple/swift,JGiola/swift,glessard/swift,glessard/swift,benlangmuir/swift,JGiola/swift,roambotics/swift,roambotics/swift,roambotics/swift,benlangmuir/swift,benlangmuir/swift,roambotics/swift,apple/swift,apple/swift,apple/swift,benlangmuir/swift,glessard/swift,apple/swift