Add ability to uninstall service

src/primaite/simulator/system/software.py

@@ -1,13 +1,10 @@
 from abc import abstractmethod
 from enum import Enum
-from typing import Any, Dict, Set, TYPE_CHECKING
+from typing import Any, Dict, Set
 
 from primaite.simulator.core import Action, ActionManager, SimComponent
 from primaite.simulator.network.transmission.transport_layer import Port
 
-if TYPE_CHECKING:
-    from primaite.simulator.network.hardware.base import Node
-
 
 class SoftwareType(Enum):
     """
@@ -143,11 +140,17 @@ class Software(SimComponent):
         This is an abstract class that should be overwritten by specific applications or services. It must be called
         after the service is already associate with a node. For example, a service may need to authenticate with a
         server during installation, or create files in the node's filesystem.
-
-        :param node: Node on which this software runs.
-        :type node: Node
         """
-        parent: "Node" = self.parent  # noqa
+        pass
+
+    def uninstall(self) -> None:
+        """Uninstall this service from a node.
+
+        This is an abstract class that should be overwritten by applications or services. It must be called after the
+        `install` method has already been run on that node. It should undo any installation steps, for example by
+        deleting files, or contacting a server.
+        """
+        pass
 
     def scan(self) -> None:
         """Update the observed health status to match the actual health status."""