remove remap-rootfs bin when running make clean

[lifubang]

I have reviewed and found such errors for about 2 times.
So I think move the target clean next to all will reduce such type error in the future?

[cyphar]

LGTM, though I wonder if it would be better to have a per-contrib-cmd Makefile (and move the .gitignore entries while we're at it). Then again, we configure the go build line fairly heavily so maybe that wouldn't work too well...

[thaJeztah]

Was there a reason you moved this to a different location in the Make file? (it makes it harder to see what changed)

[cyphar]

I think the idea is to make it harder to miss when we add new targets in the future:

So I think move the target clean next to all will reduce such type error in the future?

[thaJeztah]

Ah, yeah, probably; was considering 2 commits (one that moves it, and one that updates it), but not a hard blocker.

[lifubang]

Thanks!
Another think, as @kolyshkin asked in #4140 (comment) , I think we should make one more 1.1.x release because of the issue #4122 . But it's very hard to backport #4124 to release-1.1 , because in this PR, there are two topics in one commit, while one topic of them is not in release-1.1. @cyphar

[cyphar]

That backport is ready in #4144.

[cyphar]

LGTM, though I think splitting the makefile might make more sense (we can do that in a future PR).