Prevent the line `load:... cmd:... running ...` upon SIGINFO

Issuing SIGINFO (e.g. by pressing ^T) while a terminal process is running usually results in a printout of a line

load: 2.93  cmd: sleep 7826 waiting 0.00u 0.00s

If I have written the tool that's running, I can make it catch the signal SIGINFO and react to it (e.g., by printout of certain information, like dd or ping are known to do). However, the above line is printed nevertheless. I wonder who is responsible for its being printed, and if it is possible to suppress it. FYI: I'm using zsh inside iTerm2 on MacOS.