Small code modernizations in team.examples.filesystem

Change-Id: I23b9caa4df8d3f8b90cadaca92ec992d032908d9
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.team/+/179827
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
2 files changed