Add upstream homepage, remove dpkg-gencontrol false-positive warning

* Added missing upstream homepage URL to debian control file
* Removed "${shlibs:Depends}" from "Depends:" as this package is script-only so that substitution is unnecessary and triggers a warning at build time which can lead to confusion and is just unnecessary noise.

Author: mjnowen

debian/control

@@ -4,13 +4,13 @@ Priority: optional
 Maintainer: Noah Meyerhans <nmeyerha@amazon.com>
 Build-Depends: debhelper-compat (= 12), shellcheck
 Standards-Version: 4.4.1
-Homepage: <insert the upstream URL, if relevant>
+Homepage: https://github.com/amazonlinux/amazon-ec2-net-utils
 #Vcs-Browser: https://salsa.debian.org/debian/amazon-ec2-net-utils
 #Vcs-Git: https://salsa.debian.org/debian/amazon-ec2-net-utils.git
 
 Package: amazon-ec2-net-utils
 Architecture: all
-Depends: systemd, udev, curl, iproute2, bash, coreutils, ${shlibs:Depends}, ${misc:Depends}
+Depends: systemd, udev, curl, iproute2, bash, coreutils, ${misc:Depends}
 Description: utilities for managing network interfaces in Amazon EC2
  amazon-ec2-net-utils provides udev integration and helper utilities
  to manage network configuration in the Amazon EC2 cloud environment