aiohttp should not depend on requests (Azure#19808)

Author: xiangyan99

sdk/core/azure-core/azure/core/pipeline/transport/_aiohttp.py

@@ -36,7 +36,6 @@
 import codecs
 import aiohttp
 from multidict import CIMultiDict
-from requests.exceptions import StreamConsumedError
 
 from azure.core.configuration import ConnectionConfiguration
 from azure.core.exceptions import ServiceRequestError, ServiceResponseError
@@ -249,8 +248,6 @@ async def __anext__(self):
         except _ResponseStopIteration:
             internal_response.close()
             raise StopAsyncIteration()
-        except StreamConsumedError:
-            raise
         except Exception as err:
             _LOGGER.warning("Unable to stream download: %s", err)
             internal_response.close()