refactor(deltachat-rpc-client): remove print() calls

deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py

@@ -54,7 +54,6 @@ class ACFactory:
         account.start_io()
         while True:
             event = account.wait_for_event()
-            print(event)
             if event.type == EventType.IMAP_INBOX_IDLE:
                 break
         return account

deltachat-rpc-client/src/deltachat_rpc_client/rpc.py

@@ -97,7 +97,7 @@ class Rpc:
                     self.request_results[response_id] = response
                     event.set()
                 else:
-                    print(response)
+                    logging.warning("Got a response without ID: %s", response)
         except Exception:
             # Log an exception if the reader loop dies.
             logging.exception("Exception in the reader loop")