Fix line ending generation

.gitattributes

@@ -4,6 +4,7 @@
 *       text=auto
 
 # C# files should use CRLF.
+*.tt  text eol=crlf
 *.cs  text eol=crlf
 
 # C++ files should use CRLF.

package/Codegen/Program.cs

@@ -535,7 +535,6 @@ namespace Codegen
 
         private static bool UpdateFile(string path, string newContent)
         {
-            newContent = newContent.Replace("\r", "");
             var existing = File.Exists(path) ? File.ReadAllText(path) : "";
             if (existing != newContent)
             {