install: Drop reference to systemd-resolved.service

We don't need this anymore now that we do retry HTTP fetches.

Author: jlebon

systemd/coreos-installer.service

@@ -3,10 +3,6 @@ Description=CoreOS Installer
 Before=coreos-installer.target
 After=NetworkManager.service
 Wants=NetworkManager.service
-# Until we retry HTTP requests let's wait here until
-# systemd-resolved comes up if enabled.
-# https://github.com/coreos/coreos-installer/issues/283
-After=systemd-resolved.service
 ConditionDirectoryNotEmpty=|/etc/coreos/installer.d
 ConditionKernelCommandLine=|coreos.inst.install_dev
 OnFailure=emergency.target