Correct supported runner on Azure

See for details:
https://learn.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azure-devops&tabs=yaml

macOS ARM images do not seem to be supported there

Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

azure-pipelines.yml

@@ -26,14 +26,6 @@ jobs:
     - template: etc/ci/azure-posix.yml
       parameters:
           job_name: macos13_cpython
-          image_name: macOS-13-xlarge
-          python_versions: ['3.9', '3.10', '3.11', '3.12', '3.13']
-          test_suites:
-              all: venv/bin/pytest -n 2 -vvs
-
-    - template: etc/ci/azure-posix.yml
-      parameters:
-          job_name: macos13_cpython_arm64
           image_name: macOS-13
           python_versions: ['3.9', '3.10', '3.11', '3.12', '3.13']
           test_suites:
@@ -42,14 +34,6 @@ jobs:
     - template: etc/ci/azure-posix.yml
       parameters:
           job_name: macos14_cpython
-          image_name: macOS-14-large
-          python_versions: ['3.9', '3.10', '3.11', '3.12', '3.13']
-          test_suites:
-              all: venv/bin/pytest -n 2 -vvs
-
-    - template: etc/ci/azure-posix.yml
-      parameters:
-          job_name: macos14_cpython_arm64
           image_name: macOS-14
           python_versions: ['3.9', '3.10', '3.11', '3.12', '3.13']
           test_suites:
@@ -63,14 +47,6 @@ jobs:
           test_suites:
               all: venv/bin/pytest -n 2 -vvs
 
-    - template: etc/ci/azure-posix.yml
-      parameters:
-          job_name: macos15_cpython_arm64
-          image_name: macOS-15-large
-          python_versions: ['3.9', '3.10', '3.11', '3.12', '3.13']
-          test_suites:
-              all: venv/bin/pytest -n 2 -vvs
-
     - template: etc/ci/azure-win.yml
       parameters:
           job_name: win2019_cpython