Remove from_fastmcp.settings import settings (deprecated 2.10.2)

[jlowin]

Remove support for from fastmcp.settings import settings.

Deprecated in: 2.10.2
Migration: Use fastmcp.settings directly instead

Files affected:

• src/fastmcp/settings.py

[jlowin]

As part of this we should probably rename the settings module to e.g. settings_module or _settings or something else that doesn't conflict with the fastmcp.settings object (which could also be instantiated in the main __init__ instead of the settings module. Note: that will need its own careful deprecation handling!!