These functions weren't called anyway since 5e8f568f64 commit where Benchmark protocol requirement for this function acquired Double return type. In any event, skipping of warmup iteration is better controlled by the corresponding option of "benchmark run" command.
The intent was to decouple command-line stuff from the taking measurements stuff, while simplifyin the overall structure. It remains to be seen if these goals were achieved. Currently, compression ratio printing is disabled. Also the results from warmup iteration are also omitted (but it is likely that they won't be restored).
Timofey Solomko