set prefetch count to 1; removed obsolete imports

pyinfra/queue/queue_manager/pika_queue_manager.py

@@ -72,6 +72,7 @@ class PikaQueueManager(QueueManager):
 
         self.connection = pika.BlockingConnection(parameters=connection_params)
         self.channel = self.connection.channel()
+        self.channel.basic_qos(prefetch_count=1)
 
         if not dead_letter_queue:
             dead_letter_queue = CONFIG.rabbitmq.queues.dead_letter

pyinfra/storage/adapters/azure.py

@@ -1,10 +1,8 @@
-from itertools import repeat
 import logging
-from functools import wraps
+from itertools import repeat
 from operator import attrgetter
 
 from azure.storage.blob import ContainerClient, BlobServiceClient
-from retry import retry
 
 from pyinfra.storage.adapters.adapter import StorageAdapter