separated GetLanguageType and languagesType map in different files due to a better generation files

internal/code-generator/generator/test_files/types.gold

@@ -4,27 +4,6 @@ package slinguist
 // THIS FILE SHOULD NOT BE EDITED BY HAND
 // Extracted from github/linguist commit: fe8b44ab8a225b1ffa75b983b916ea22fee5b6f7
 
-type Type int
-
-const (
-	// Language's type. Either data, programming, markup, prose, or unknown.
-	Unknown Type = iota
-	Data
-	Programming
-	Markup
-	Prose
-)
-
-// GetLanguageType returns the given language's type.
-func GetLanguageType(language string) (langType Type) {
-	langType, ok := languagesType[language]
-	if !ok {
-		langType = Unknown
-	}
-
-	return langType
-}
-
 var languagesType = map[string]Type{
 	"Scaml":  Markup,
 	"Scheme": Programming,