Remove excessive API docs in comments

[axa88]

Description

in the spirit of #24037 and #24114, the excesses in Picker should be removed as well.
There's probably others. Full examples have no place here

Steps to Reproduce

No response

Link to public reproduction project repository

No response

Version with bug

8.0.40 SR5

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

I was not able test on other platforms

Affected platform versions

NA

Did you find any workaround?

No response

Relevant log output

No response

[MartyIX]

@axa88 Would you be open to create a PR for this?

[jfversluis]

Thanks! Opened a PR for this. If you're up for it, indeed open a PR yourself! These should be easy contributions and ".NET MAUI contributor" would look amazing on your LinkedIn profile! 😉