Fix: no_effect_underscore_binding fires on ignored parameters of async fns

[not-elm]

Fixes #12279
changelog: Fix [no_effect_underscore_binding])

The warning is no longer displayed when an underscore is given in the parameter name of an asynchronous function.

[rustbot]

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[y21]

Welcome to clippy!

The changes look good to me, but, while we're here, can you update the lint description to remove the "known problems" section, since this is outdated?

rust-clippy/clippy_lints/src/no_effect.rs

Lines 46 to 48 in 6aa5f1a

	/// ### Known problems
	/// Further usage of this variable is not checked, which can lead to false positives if it is
	/// used later in the code.

#12172 started checking for usage

[not-elm]

Deleted "Known problems" section.

[y21]

Thanks! Could you squash the first 3 commits? Then it's good to merge.
Also, FYI, I don't know if it's intentional but it looks like those commits aren't linked to your account and use a different name. It's not a problem for clippy, just want to make sure it's intentional

[not-elm]

Sorry for the confusion, but he is my alter ego, so no problem.

Also, I squashed 3 commits, please check them.

[y21]

Nice, thank you!

@bors r+

[bors]

📌 Commit 672bd5e has been approved by y21

It is now in the queue for this repository.

[bors]

⌛ Testing commit 672bd5e with merge 78f088b...

[bors]

💔 Test failed - checks-action_test

[y21]

@bors retry

[bors]

⌛ Testing commit 672bd5e with merge a056ff3...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: y21
Pushing a056ff3 to master...