commit baa70e975186bb0ee8a4b16b9374cb6e794f8975 duplicates
the description of --mtu.
This patch removes the duplicated description.
Docker-DCO-1.1-Signed-off-by: Ken ICHIKAWA <ichikawa.ken@jp.fujitsu.com> (github: ichik1)
Upstream-commit: cdd5e423aa
Component: cli