stretch: Remove comments from control that can distract pbuilder

In older versions of pbuilder-satisfydepends

stretch/debian/control

@@ -2,10 +2,6 @@ Source: icinga2
 Section: admin
 Priority: extra
 Maintainer: Icinga Development Team <info@icinga.com>
-#Maintainer: Debian Nagios Maintainer Group <pkg-nagios-devel@lists.alioth.debian.org>
-#Uploaders: Markus Frosch <lazyfrosch@debian.org>,
-#           Jan Wagner <waja@cyconet.org>,
-#           Alexander Wirt <formorer@debian.org>
 Build-Depends: bash-completion,
                bison,
                cmake (>= 2.8.7),