Don't echo warnings about application clocks that are already at max
On threadripper-gpu02 with a GP100, I get this on stdout for all runs
"Cannot change application clocks for Quadro GP100 to optimal values due to insufficient permissions. Current values are (715,1556), max values are (715,1556).
Use sudo nvidia-smi -acp UNRESTRICTED or contact your admin to change application clocks."
For the case where the clocks are already running at max, I see no reason to echo warnings to stderr and tell users they should do anything.