Remove temporary audit exception for lsr

This removes the temporary `audit_download_strategy` exception for
the `lsr` formula. This was necessary to be able to merge support for
tangled.sh Git URLs, as it made the `using: :git` argument in the
`lsr` formula redundant and caused the "formula audit" check to fail
in brew CI.

Library/Homebrew/resource_auditor.rb

@@ -85,9 +85,6 @@ module Homebrew
         end
       end
 
-      # TODO: Remove this exception for `lsr` after support for tangled.sh
-      # Git URLs is available in a brew release.
-      return if name == "lsr"
       return if url_strategy != DownloadStrategyDetector.detect("", using)
 
       problem "Redundant `using:` value in URL"