Remove Ken from docs maintainers (he's busy on other things)

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)

docs/MAINTAINERS

@@ -1,4 +1,3 @@
 Andy Rothfusz <andy@dotcloud.com> (@metalivedev)
-Ken Cochrane <ken@dotcloud.com> (@kencochrane)
 James Turnbull <james@lovedthanlost.net> (@jamtur01)
 Sven Dowideit <SvenDowideit@fosiki.com> (@SvenDowideit)