Remove or change outdated comment (Lenovo ThinkPad X1 Yoga 7th-gen)

[bittner]

In lenovo/thinkpad/x1/yoga/7th-gen a comment explains things that were okay 2+ years ago when this project was still on kernel 5.x (now we run 6.6.72).

  # This laptop is too new for the kernel currently in nixos-unstable.
  # On Kernel 5.15.x, dmesg shows the `hardware is newer than drivers` message.
  # When starting the system with 5.15.x, only a tty is being displayed.
  # After our tests, at least version 5.19 is required for the system to work properly.

Should this comment be removed or otherwise updated?

Heads-up to @MayNiklas who added the configuration on Oct 22, 2022.

[MayNiklas]

I agree: since Kernel < 5.19 isn't a realistic setup anymore, this isn't really needed anymore.

I'm unsure about removing the "new enough kernel check":

• on a newer kernel, it does nothing
• it services as a source of information, that at least 5.19 is needed

At least the comment, that it's "too new", should be removed for sure.