How to detach my project from Git source control developed with VS2013

i create a test project with VS2013 and after that i attach that project to GIT source control. i made some mistake in project and that is why change is not pushing to github website. so now i want to know how could i detach this project from Git source control.

give me step-by-step instruction. if i need to delete any file from project or do i need to remove any lines from solution file or project file then please give me the instruction. i saw one folder has been created in my project called .git and also 2 other files create called .gitattributes and .gitignore.looking for guide line in details.

thanks