internal/encoding/yaml: drop use of kr/pretty in a test

This debug helper was added back in 2019 but it hasn't been used since;
for example, I rewrote the yaml package to use yaml.v3 a year ago
and I didn't even notice it was there.

For now it seems best to keep the set of direct module dependencies
lean unless there's a clear benefit to added dependencies.

Signed-off-by: Daniel Martí <[email protected]>
Change-Id: I7e3f31b1563ad0dedd4742af5644221c894e2554
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1215625
Unity-Result: CUE porcuepine <[email protected]>
TryBot-Result: CUEcueckoo <[email protected]>
Reviewed-by: Roger Peppe <[email protected]>

Author: mvdan

go.mod

@@ -10,7 +10,6 @@ require (
 	github.com/google/go-cmp v0.7.0
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
 	github.com/google/uuid v1.6.0
-	github.com/kr/pretty v0.3.1
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.1.1
 	github.com/pelletier/go-toml/v2 v2.2.4
@@ -32,6 +31,7 @@ require (
 
 require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect

internal/encoding/yaml/encode_test.go

@@ -19,7 +19,6 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
-	"github.com/kr/pretty"
 	"gopkg.in/yaml.v3"
 
 	"cuelang.org/go/cue/ast"
@@ -326,20 +325,3 @@ true
 		})
 	}
 }
-
-// TestX is for experimentation with the YAML package to figure out the
-// semantics of the Node type.
-func TestX(t *testing.T) {
-	t.Skip()
-	var n yaml.Node
-	yaml.Unmarshal([]byte(`
-# map
-map: {
-	# doc
-} # line 1
-
-`), &n)
-
-	pretty.Print(n)
-	t.Fail()
-}