how to clean up remote/ref

When I migrated from svn to git, I keep updating svn repo and also added a dummy git repo, Now the GIT_DIR/config look likes

[core]
	repositoryformatversion = 0
	filemode = true
	bare = false
	logallrefupdates = true
[svn-remote "svn"]
  url = http://localhost/svn/project2/
  fetch = :refs/remotes/trunk
[remote "origin"]
	url = http://bl@localhost/git-repo/project/
	fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
	remote = origin
	merge = refs/heads/master

Now I feel I don't need update the svn repo (actually it was inactive for more than 1 year after a few updates). Also I no longer want to use http protocol to remote git repo.

It said the HEAD is different that orgin/master

$ git checkout master Switched to branch "master" Your branch and 'origin/master' have diverged, and have 71 and 24 different commit(s) each, respectively.

How do it
1. remove any reference to the svn repo [svn-remote "svn"]
2. remove reference to the http [remote "origin"]
3. setup a new empty git as the new remote repos

thanks