Remove GOMAXPROCS=1 in the next deployment

We should consider removing this unnecessary setting in the next deployment.

[6:12:21 pm] <dcf1> shelikhoo: it is also likely that GOMAXPROCS=1 can be removed from the run script. That was an experiment 2 years ago that turned out not to have an effect: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/32576#note_2594746