Remove Ubuntu 15.10 (Wily Werewolf) from build-deb targets

As of July 28, 2016, it is officially EOL (https://lists.ubuntu.com/archives/ubuntu-announce/2016-July/000210.html) and will receive no further updates.

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

contrib/builder/deb/amd64/generate.sh

@@ -81,7 +81,7 @@ for version in "${versions[@]}"; do
 	# packaging for "sd-journal.h" and libraries varies
 	case "$suite" in
 		precise|wheezy) ;;
-		sid|stretch|wily|xenial) packages+=( libsystemd-dev );;
+		sid|stretch|xenial) packages+=( libsystemd-dev );;
 		*) packages+=( libsystemd-journal-dev );;
 	esac
 

contrib/builder/deb/amd64/ubuntu-wily/Dockerfile

@@ -1,16 +0,0 @@
-#
-# THIS FILE IS AUTOGENERATED; SEE "contrib/builder/deb/amd64/generate.sh"!
-#
-
-FROM ubuntu:wily
-
-RUN apt-get update && apt-get install -y apparmor bash-completion btrfs-tools build-essential curl ca-certificates debhelper dh-apparmor dh-systemd git libapparmor-dev libdevmapper-dev libltdl-dev libseccomp-dev libsqlite3-dev pkg-config libsystemd-dev --no-install-recommends && rm -rf /var/lib/apt/lists/*
-
-ENV GO_VERSION 1.7.1
-RUN curl -fSL "https://storage.googleapis.com/golang/go${GO_VERSION}.linux-amd64.tar.gz" | tar xzC /usr/local
-ENV PATH $PATH:/usr/local/go/bin
-
-ENV AUTO_GOPATH 1
-
-ENV DOCKER_BUILDTAGS apparmor pkcs11 seccomp selinux
-ENV RUNC_BUILDTAGS apparmor seccomp selinux