Automatically remove trailing whitespace instead of showing a warning
This warning annoys people who create file or folder names with spaces in them, as normal people do, because the warning appears right after they type the spaces between words.
Instead let's simply remove trailing whitespace automatically, as it is pretty much always unintentional and apparently it can cause issues with file sharing in a mixed environment containing Windows machines.
cc @teams/vdg
Edited by Nate Graham