Remove more examples. Update doctests.

[playfulFence]

Description

Moves things forward in terms of #2513.
Some examples are still there, part of them will be removed when QA repo/directory is published.

Testing

xtask run-doc-tests esp-hal <chip>

[bjoernQ]

I'd say some of the "examples" which are deleted here should go to qa-test (ideally hil test but most of them cannot) instead of just deleting them.

While it's nice the doc tests compile, we should easily be able to verify those drivers still do what they are supposed to do

[playfulFence]

I guess since #2558 was merged, I can move part of deleted examples to qa-test directory now.

[MabezDev]

Let's wait for the release to merge this

[MabezDev]

This is close to ready, just some final bits to restore/move and it should be good to go!

[jessebraham]

There's a bunch of unnecessary noise in the doctests, please clean this up. I may have missed some too.

[bjoernQ]

I guess in some places there are commented out println! lines because before that didn't compile - we now have that in the before-snippet so no need to comment out these (but it's println! not esp_println::println!)

[playfulFence]

I think what @jessebraham meant is that some of those printlns were more of a noise for documentation than a benefit 🤔

I think I agree, probably most of those println made sense in the example but not in the documentation.

[MabezDev]

There are still quite a lot of print's that are commented out, we recently added noop println:

esp-hal/esp-hal/src/macros.rs

Lines 19 to 21 in c1f0c13

	# macro_rules! println {
	# ($($tt:tt)*) => { };
	# }

Feel free to add print! there too, and then proceed to uncomment the prints

[MabezDev]

I think I agree, probably most of those println made sense in the example but not in the documentation.

I agree that most aren't needed, but some are.

[bjoernQ]

Also in a lot of places we now have writeln!(serial_tx,"..... which is definitely more noise in examples than println!

[MabezDev]

Thanks! This is looking good from my side