Update vendored library github.com/minio/minio-go

vendor/github.com/minio/minio-go/utils.go

@@ -221,16 +221,10 @@ var supportedHeaders = []string{
 	"cache-control",
 	"content-encoding",
 	"content-disposition",
+	"content-language",
 	// Add more supported headers here.
 }
 
-// cseHeaders is list of client side encryption headers
-var cseHeaders = []string{
-	"X-Amz-Iv",
-	"X-Amz-Key",
-	"X-Amz-Matdesc",
-}
-
 // isStorageClassHeader returns true if the header is a supported storage class header
 func isStorageClassHeader(headerKey string) bool {
 	return strings.ToLower(amzStorageClass) == strings.ToLower(headerKey)
@@ -247,19 +241,6 @@ func isStandardHeader(headerKey string) bool {
 	return false
 }
 
-// isCSEHeader returns true if header is a client side encryption header.
-func isCSEHeader(headerKey string) bool {
-	key := strings.ToLower(headerKey)
-	for _, h := range cseHeaders {
-		header := strings.ToLower(h)
-		if (header == key) ||
-			(("x-amz-meta-" + header) == key) {
-			return true
-		}
-	}
-	return false
-}
-
 // sseHeaders is list of server side encryption headers
 var sseHeaders = []string{
 	"x-amz-server-side-encryption",