[Bug 83695] Produces warning if lsb_release isn't Ubuntu

[Brian Brazil]

Public bug reported:

Binary package hint: system-tools-backends

This is related to #72722

System-tools-backends produces an error if lsb_release isn't one of a handful of values.
This breaks for downstream distributions.

Please remove this check, the fact that I'm using a supported system is implicit from me using a package from Ubuntu.
Hint: debian/patches/05_ubuntu-no-warning.patch

** Affects: system-tools-backends (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu Desktop Bugs
         Status: Rejected

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Produces warning if lsb_release isn't Ubuntu
https://launchpad.net/bugs/83695