Eclipse: Prevent creation of .gitignore for generated code

We are using an Eclipse xText based Editor to generate some code in our projects but for some reason eclipse is generating .gitignore files for generated code by default. I understand the idea behind it that generated should not be part of version control but instead generated locally but in our case the generator is not integerated into the code-framework (c#).
To make a long story short. To turn that behaviour of:
Window>Preferences>Team>Git>Project>Uncheck 'Automatically ignore derived resources by adding them to .gitignore'