Remove opts.QuotedString implementation

This was originally added to solve a CLI usability issue related to `docker-machine` and `docker` (explicitly *not* `dockerd`) -- the "docker/cli" repository has a separate copy of this entire `opts` package, so isn't even using this implementation.

Signed-off-by: Tianon Gravi <admwiggin@gmail.com>

2 files changed, 0 insertions, 75 deletions

diff --git a/opts/quotedstring.go b/opts/quotedstring.go
deleted file mode 100644
index 34f30971e4..0000000000
--- a/opts/quotedstring.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package opts // import "github.com/docker/docker/opts"
-
-// QuotedString is a string that may have extra quotes around the value. The
-// quotes are stripped from the value.
-type QuotedString struct {
-	value *string
-}
-
-// Set sets a new value
-func (s *QuotedString) Set(val string) error {
-	*s.value = trimQuotes(val)
-	return nil
-}
-
-// Type returns the type of the value
-func (s *QuotedString) Type() string {
-	return "string"
-}
-
-func (s *QuotedString) String() string {
-	return *s.value
-}
-
-func trimQuotes(value string) string {
-	if len(value) < 2 {
-		return value
-	}
-
-	lastIndex := len(value) - 1
-	for _, char := range []byte{'\'', '"'} {
-		if value[0] == char && value[lastIndex] == char {
-			return value[1:lastIndex]
-		}
-	}
-	return value
-}
-
-// NewQuotedString returns a new quoted string option
-func NewQuotedString(value *string) *QuotedString {
-	return &QuotedString{value: value}
-}
diff --git a/opts/quotedstring_test.go b/opts/quotedstring_test.go
deleted file mode 100644
index fc7b7747b1..0000000000
--- a/opts/quotedstring_test.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package opts // import "github.com/docker/docker/opts"
-
-import (
-	"testing"
-
-	"gotest.tools/v3/assert"
-	is "gotest.tools/v3/assert/cmp"
-)
-
-func TestQuotedStringSetWithQuotes(t *testing.T) {
-	value := ""
-	qs := NewQuotedString(&value)
-	assert.Check(t, qs.Set(`"something"`))
-	assert.Check(t, is.Equal("something", qs.String()))
-	assert.Check(t, is.Equal("something", value))
-}
-
-func TestQuotedStringSetWithMismatchedQuotes(t *testing.T) {
-	qs := NewQuotedString(new(string))
-	assert.Check(t, qs.Set(`"something'`))
-	assert.Check(t, is.Equal(`"something'`, qs.String()))
-}
-
-func TestQuotedStringSetWithNoQuotes(t *testing.T) {
-	qs := NewQuotedString(new(string))
-	assert.Check(t, qs.Set("something"))
-	assert.Check(t, is.Equal("something", qs.String()))
-}
-
-func TestQuotedStringEmptyOrSingleCharString(t *testing.T) {
-	qs := NewQuotedString(new(string))
-	assert.Check(t, qs.Set(""))
-	assert.Check(t, qs.Set("'"))
-}