Use relative imports

Signed-off-by: Mathias L. Baumann <[email protected]>

Author: Marenz

src/frequenz/dispatch/__init__.py

@@ -3,10 +3,9 @@
 
 """A highlevel interface for the dispatch API."""
 
-from frequenz.dispatch._dispatcher import Dispatcher, ReceiverFetcher
-from frequenz.dispatch._event import Created, Deleted, DispatchEvent, Updated
-
 from ._dispatch import Dispatch
+from ._dispatcher import Dispatcher, ReceiverFetcher
+from ._event import Created, Deleted, DispatchEvent, Updated
 
 __all__ = [
     "Created",

src/frequenz/dispatch/actor.py

@@ -13,9 +13,8 @@
 from frequenz.client.dispatch import Client
 from frequenz.sdk.actor import Actor
 
-from frequenz.dispatch._event import Created, Deleted, DispatchEvent, Updated
-
 from ._dispatch import Dispatch
+from ._event import Created, Deleted, DispatchEvent, Updated
 
 _MAX_AHEAD_SCHEDULE = timedelta(hours=5)
 """The maximum time ahead to schedule a dispatch.