mozilla/addon-sdk — pull request #389 by nmaier (2012-03-28 05:32:46+00:00)
Title: Remove iconURL/icon64URL from install.rdf template

iconURL/iconURL64 are never set to a value. cuddlefish will package any
icons using the default location (/icon.png, ...)

This is actually something a lot of AMO editors used to nag authors about (when it was unclear that the markup was entirely generated).