[BUGFIX] Local git repositories get no results

If you got a local git repository, with no remotes, only local development, CVSAnalY does not insert your commits.

**How to reproduce**
```
mkdir my-git-test
cd my-git-test
git init
touch foo.txt
git add foo.txt
git commit -m "foo.txt added"
touch bar.txt
git add bar.txt
git commit -m "bar.txt added"
git rm foo.txt
git commit -m "foo.txt deleted"
cvsanaly2 --config-file ../config
```

In your database, you only see one entry in the repositories for the repo. But all other tables are empty.
The reason is, that there are various checks for a remote repository. This PR removes the remote checks.
Why this checks are there? Is there a special reason for it?