Remove plain text file type association from default settings (#25420)
Finn Evers
and
Peter Tripp
created
Closes #20291
This PR removes the plain text file association from the default
settings, as #21298 added a `LanguageMatcher` for Plain Text files,
which now associates "Plain Text" with `txt`-files (see
https://github.com/zed-industries/zed/blob/10053e2566c6c3312e2312088e40b757daeab189/crates/language/src/language.rs#L127-L137).
Thus, the association via the default settings is not required anymore,
which fixes #20291 as described in
https://github.com/zed-industries/zed/issues/20291#issuecomment-2500731743
Release Notes:
- Fixed default file type associations overriding associations provided
by extensions for `txt`-files.
Co-authored-by: Peter Tripp <peter@zed.dev>