Can Sourcetree be used without bitbucket?

[Carl Reiff]

Can Sourcetree be used with an existing Github (source/origin) repository, completely bypassing (not utilizing) Bitbucket?

[Carl Reiff]

More specifically, I just want Sourcetree as a Git GUI, and I only want to use it for synching files between my local repository and my existing Github remote repository.  I don't want/need a Bitbucket repository.  That is, if I do a Push from my local repo, it needs to go to my Github repo, not a Bitbucket repo.  If that's not what is going to happen, then I need to delete my Bitbucket repo and account.  How would I go about doing that?

When I put in my Github repository's credentials, it seemed as though the files were copied to my Bitbucket account repository.  If that is so, I need to delete it (the Bitbucket repository).  Please tell me how.  The files can't be there.

Thank you.