Don't use go-openapi/runtime

Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>

Author: kzys

go.mod

@@ -3,10 +3,10 @@ module github.com/go-openapi/validate
 go 1.14
 
 require (
-	github.com/go-openapi/analysis v0.21.1
+	github.com/go-openapi/analysis v0.21.2
 	github.com/go-openapi/errors v0.19.9
 	github.com/go-openapi/jsonpointer v0.19.5
-	github.com/go-openapi/loads v0.20.3
+	github.com/go-openapi/loads v0.21.1
 	github.com/go-openapi/spec v0.20.4
 	github.com/go-openapi/strfmt v0.21.1
 	github.com/go-openapi/swag v0.21.1