Deprecated code removal

[dangoor]

We should remove all deprecated functions that weren't introduced after 0.41. (Search for "deprecate" or uses of the DeprecationWarning module.

See also

• Deprecate & remove DocumentManager "pathDeleted" event #8336
• Remove deprecated file system APIs #6127

[TomMalbran]

We should probably consider removing the code used to transfer the preferences.

[le717]

Cleanup would also include the depreciated global CodeMirror object, but that might be trickier to check for...