Remove version selector and edit on Github on search page, as it only searches the latest docs

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Merge pull request #8529 from SvenDowideit/update-version-dropdown-on-404

Remove version selector and edit on Github on search page, as it only se...