test: use vmtest from images

Now that the "images" library contains the vmtest testing helpers
we use that and remove ouuse that and remove our own copy..

Author: mvo5

.github/workflows/tests.yml

@@ -133,7 +133,6 @@ jobs:
       run: |
         # make sure test deps are available for root
         sudo -E pip install --user -r test/requirements.txt
-        sudo -E pip install --user .
     - name: Workarounds for GH runner diskspace
       run: |
         # use custom basetemp here because /var/tmp is on a smaller disk

pyproject.toml

@@ -1,6 +1,6 @@
 pytest==7.4.3
 flake8==6.1.0
-paramiko==2.12.0
 boto3==1.33.13
 qmp==1.1.0
 pylint==3.2.5
+vmtest @ git+https://github.com/osbuild/images.git