runconfig/opts: remove deprecated ConvertKVStringsToMap

It was deprecated in 437e1ae15e, which is
part of v27.0, and is no longer in use. This was the remaining code
in the runconfig/opts package, which is now removed.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

runconfig/opts/parse.go

@@ -1,18 +0,0 @@
-package opts // import "github.com/docker/docker/runconfig/opts"
-
-import (
-	"strings"
-)
-
-// ConvertKVStringsToMap converts ["key=value"] to {"key":"value"}
-//
-// Deprecated: this function is no longer used, and will be removed in the next release.
-func ConvertKVStringsToMap(values []string) map[string]string {
-	result := make(map[string]string, len(values))
-	for _, value := range values {
-		k, v, _ := strings.Cut(value, "=")
-		result[k] = v
-	}
-
-	return result
-}