Revert unencryted storage warning prompt

[n4ss]

Signed-off-by: Nassim 'Nass' Eddequiouaq eddequiouaq.nassim@gmail.com

What is this change?

Reverting due to the unencrypted storage warning prompt breaking the build for some of the users: #561 (comment)

Anything left to do?

Short term

• Add a deprecation note in the docs for an additional prompt for terminal users of this feature that would be added in 3 releases

Long term

• Add the removed prompt making sure that both stdin & stderr (where the warning is outputted) are terminals

---

/cc @vdemeester @thaJeztah @cpuguy83

[n4ss]

not sure what failed in the following:

20:11:06 --- FAIL: TestRemove (10.77s)
20:11:06 	remove_test.go:25: assertion failed: 
20:11:06 		Command:  docker stack rm test-stack-remove
20:11:06 		ExitCode: 1
20:11:06 		Error:    exit status 1
20:11:06 		Stdout:   Removing service test-stack-remove_one
20:11:06 		Removing service test-stack-remove_two
20:11:06 		Removing network test-stack-remove_default
20:11:06 		
20:11:06 		Stderr:   Failed to remove network spm73ru1a93b93wwr5qo2v72u: Error response from daemon: rpc error: code = FailedPrecondition desc = network spm73ru1a93b93wwr5qo2v72u is in use by task 590z2ts1llf2b0yr0hpexzay8Failed to remove some resources from stack: test-stack-remove
20:11:06 		
20:11:06 		
20:11:06 		Failures:
20:11:06 		ExitCode was 1 expected 0
20:11:06 		Expected stderr to contain "[NOTHING]"
20:11:06 		Expected no error
20:11:06 	remove_test.go:40: timeout hit after 10s: docker stack rm test-stack-remove failed : exit status 1
20:11:06 FAIL
20:11:06 FAIL	github.com/docker/cli/e2e/stack	11.009s

Tests work on my machine somehow..

[vdemeester]

SGTM 🐸

[thaJeztah]

LGTM, thanks!