[minor] remove the backwards compatibility redirects

[liamhuber]

Before including this change in a release, we want to merge the following for...

import alarm:

• [patch] use ImportAlarm from pyiron_snippets pyiron_atomistics#1431
• [patch] use ImportAlarm from pyiron_snippets pyiron_gpl#193
• [patch] use ImportAlarm from pyiron_snippets pyiron_continuum#317
• [patch] use ImportAlarm from pyiron_snippets pyiron_contrib#1066

deprecator stuff:

• [patch] use deprecate from pyiron_snippets pyiron_atomistics#1432
• [patch] use deprecate from pyiron_snippets pyiron_contrib#1067

logger:

• [patch] replace logger with snippets version pyiron_atomistics#1438
• [patch] replace logger with snippets version pyiron_contrib#1073

As a reminder to not release this, let's leave this as draft until they're

[liamhuber]

@jan-janssen, @pmrv, @niklassiemer -- the entire stack of atomistics PRs is passing and, from my perspective, well aligned with our conclusions from the meeting this morning. Please go ahead and merge down that stack at your convenience.

[jan-janssen]

Looks good to me

[liamhuber]

@jan-janssen What happened to waiting for the downstream to be ready before making a new release? I think we will be able to get contrib patched by tomorrow so the problem will not persist wrong, but it does leave me feeling a little frustrated and ignored.