chore(editorconfig): use lf for end_of_line

[kevinhwang91]

Current project files all use lf instead of crlf.

[sumneko]

Should just remove this setting.
By default, it will be selected according to your local platform.

[kevinhwang91]

I don't think so. If the project is used editorconfig, all users editing the file should respect the rule but don't depend on their OS. For now, I enter a file, my Neovim plugin for editorconfig will format the end of the line to become crlf automatically, and my gutter is hinting me all lines are changed.

[sumneko]

It is best to use the default behavior of "respecting existing newline characters"