Drop individual VM classes as python types completely

Since those are unused now, remove them from the source, so it is easier
to debug the code (avoid never matching isinstance(...)).

qubesadmin/app.py

@@ -38,7 +38,6 @@ import qubesadmin.vm
 import qubesadmin.config
 
 BUF_SIZE = 4096
-VM_ENTRY_POINT = 'qubesadmin.vm'
 
 class VMCollection(object):
     '''Collection of VMs objects'''
@@ -220,20 +219,13 @@ class QubesBase(qubesadmin.base.PropertyHolder):
     def get_vm_class(clsname):
         '''Find the class for a domain.
 
-        Classes are registered as setuptools' entry points in ``qubes.vm``
-        group. Any package may supply their own classes.
+        Compatibility function, client tools use str to identify domain classes.
 
         :param str clsname: name of the class
-        :return type: class
+        :return str: class
         '''
 
-        try:
-            return qubesadmin.utils.get_entry_point_one(
-                VM_ENTRY_POINT, clsname)
-        except KeyError:
-            raise qubesadmin.exc.QubesException(
-                'no such VM class: {!r}'.format(clsname))
-            # don't catch TypeError
+        return clsname
 
     def add_new_vm(self, cls, name, label, template=None, pool=None,
             pools=None):

qubesadmin/vm/__init__.py

@@ -339,27 +339,6 @@ class QubesVM(qubesadmin.base.PropertyHolder):
             self._klass = super(QubesVM, self).klass
         return self._klass
 
-# pylint: disable=abstract-method
-class AdminVM(QubesVM):
-    '''Dom0'''
-    pass
-
-
-class AppVM(QubesVM):
-    '''Application VM'''
-    pass
-
-
-class StandaloneVM(QubesVM):
-    '''Standalone Application VM'''
-    pass
-
-
-class TemplateVM(QubesVM):
-    '''Template for AppVM'''
-    pass
-
-
 class DispVMWrapper(QubesVM):
     '''Wrapper class for new DispVM, supporting only service call
 

setup.py

@@ -38,13 +38,6 @@ if __name__ == '__main__':
         },
         entry_points={
             'console_scripts': list(get_console_scripts()),
-            'qubesadmin.vm': [
-                'AppVM = qubesadmin.vm:AppVM',
-                'TemplateVM = qubesadmin.vm:TemplateVM',
-                'StandaloneVM = qubesadmin.vm:StandaloneVM',
-                'AdminVM = qubesadmin.vm:AdminVM',
-                'DispVM = qubesadmin.vm:DispVM',
-            ],
         },
 
         )