stdlib: Fix typos and remove unneeded import in Simulator

Change-Id: I6faa63959d09444b8e931e14846fb1af98866ade
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/62931
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
1 file changed