remove cookiestxt

[switchupcb]

cookiestxt is scheduled to be removed from awesome-go on August 20, 2022. If you would like it to remain, fix your repository such that it passes tests with a current version of Go and shows code coverage of 80% or more. In addition, your project is failing to meet the following criteria:

• Official releases should be at least once a year if the project is ongoing. The last release for cookiestxt was on Mar 08, 2021.
• The project does not support generics issued in go 1.18. Projects must be compatible with Go versions issued in the last year. See https://go.dev/doc/devel/release for release history.

Once completed, post here to confirm.

Owner: @mengzhuo
Submission: #1616
Related: https://github.com/avelino/awesome-go/pulls?q=is%3Apr+cookiestxt+is%3Aclosed
Prompt: #4352
NOTE: 154 Lines of Go Code

[avelino]

Thank you for contributing with awesome-go, we will revise your contribution as soon as possible.

Automation body links content check:

• godoc.org or pkg.go.dev: True
• goreportcard.com: False
• coverage: False

your project is about to be approved, it's under revision, it may take a few days

[mengzhuo]

I'll take a look.

[mengzhuo]

I've updated coverage and reportcard, please close this PR, thanks for inform.