Remove unneeded winit dependencies

[melix99]

I noticed that crates using this project as a dependency pulled sctk-adwaita, which seems unnecessary for this crate.

[waywardmonkeys]

Maybe our dependency shouldn’t enable any features and we should enable them only as a dev dependency?

thoughts, @xorgy ?

[melix99]

If I don't enable at least x11 or wayland on Linux, I can't build the project because of this error:

   Compiling winit v0.30.10
error: The platform you're compiling for is not supported by winit
  --> /var/home/melix/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/winit-0.30.10/src/platform_impl/mod.rs:78:1
   |
78 | compile_error!("The platform you're compiling for is not supported by winit");
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[melix99]

See rust-windowing/winit#3174

[xorgy]

Maybe for now just make it use wayland and add a comment in the Cargo.toml that links to the winit issue for this. Sorry it's been so long!