qc.summary warning about scale guides

[lorbaer]

Hi there,
Just a minor thing:
the qc.summary function showed:

The `<scale>` argument of `guides()` cannot be `FALSE`. Use "none" instead as of ggplot2 3.3.4.
ℹ The deprecated feature was likely used in the meffil package.
  Please report the issue to the authors.

[perishky]

Thank you for letting us know! qc.summary() with ggplot2 v3.4.1 also generates a deprecation warning but about something else ('fun.y'). We'll keep an eye on it to prevent any errors being generated.