clean up resources / fix changelog (#12432)

eng/common/pipelines/templates/steps/daily-dev-build-variable.yml

@@ -0,0 +1,12 @@
+# This script fragment is used across our repos to set a variable "SetDevVersion" which
+# is used when this pipeline is going to be generating and publishing daily dev builds.
+
+steps:
+- pwsh: |
+    $setDailyDevBuild = "false"
+    if (('$(Build.Reason)' -eq 'Schedule') -and ('$(System.TeamProject)' -eq 'internal')) {
+      $setDailyDevBuild = "true"
+    }
+    echo "##vso[task.setvariable variable=SetDevVersion]$setDailyDevBuild"
+  displayName: "Setup Versioning Properties"
+  condition: eq(variables['SetDevVersion'], '')

eng/pipelines/templates/steps/set-dev-build.yml

@@ -3,7 +3,7 @@ parameters:
   ServiceDirectory: ''
 
 steps:
-  - template: tools/daily-dev-build-variable/daily-dev-build-variable.yml@azure-sdk-tools
+  - template: /eng/common/pipelines/templates/steps/daily-dev-build-variable.yml
 
   - task: PythonScript@0
     condition: eq(variables['SetDevVersion'],'true')

sdk/core/azure-core/azure/core/polling/_poller.py

@@ -31,11 +31,15 @@
 except ImportError:
     from urllib.parse import urlparse
 
-from typing import Any, Callable, Union, List, Optional, Tuple, TypeVar, Generic
+from typing import TYPE_CHECKING, TypeVar, Generic
 from azure.core.pipeline.transport._base import HttpResponse
 from azure.core.tracing.decorator import distributed_trace
 from azure.core.tracing.common import with_current_context
 
+if TYPE_CHECKING:
+    from typing import Any, Callable, Union, List, Optional, Tuple
+
+
 PollingReturnType = TypeVar("PollingReturnType")