Revert "Convert POE::Resource::Aliases into a proper class."

This reverts commit f8e8c694d00c3cecf50c2a4d120ee67d7024c42d.
Revert "Convert POE::Resource::Extrefs into a proper class."

This reverts commit 3ae646376bd89572e9a61ae1d10d0609d0cdc025.
Revert "Convert POE::Resource::SIDs into a proper class."

This reverts commit 68089ffe81a2dd1e39c07288ba1723d74165523f.