Remove the 'end_of_line' value. Addendum to 32db19f6 - PR #2528

According to https://github.com/editorconfig/editorconfig/wiki/EditorConfig-Properties#end_of_line
there is not yet any value to translate "use the native end-of-line" from the VCS.
So for the time being, let's follow the advice mentioned in the article:
> if you want to use native line endings between different operating systems it is better not to set this option and leave that task to the VCS.

.editorconfig

···
 root = true
 
 [*]
-end_of_line = crlf
 insert_final_newline = true
 charset = utf-8
 indent_size = 4