Remove readline-dev from checkdepends

Crystal stdlib doesn't have libreadline bindings included since 0.32.0
7 jobs for !16162 with patch-3 in 29 minutes and 14 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
failed #279416
docker-alpine x86_64 allowed to fail
lint

00:00:17

 
  Build
failed #279421
docker-alpine ci-build aarch64
build-aarch64

00:28:53

passed #279422
docker-alpine ci-build armv7
build-armv7

00:00:30

passed #279420
docker-alpine ci-build ppc64le
build-ppc64le

00:00:41

passed #279419
docker-alpine ci-build s390x
build-s390x

00:00:38

passed #279418
docker-alpine ci-build x86
build-x86

00:00:18

failed #279417
docker-alpine ci-build x86_64
build-x86_64

00:01:07

 
Name Stage Failure
failed
build-x86_64 Build
No job log
failed
lint Lint
No job log
failed
build-aarch64 Build
No job log