CI: Remove CircleCI in favor of GHA ARM builds (pandas-dev#60761)

(cherry picked from commit f3045db)

Author: mroeschke

.circleci/config.yml

@@ -61,7 +61,6 @@ pandas/_version.py export-subst
 *.pxi export-ignore
 
 # Ignoring stuff from the top level
-.circleci export-ignore
 .github export-ignore
 asv_bench export-ignore
 ci export-ignore

.gitattributes

@@ -67,14 +67,13 @@ def s3_base(worker_id, monkeypatch):
     monkeypatch.setenv("AWS_SECRET_ACCESS_KEY", "foobar_secret")
     if is_ci_environment():
         if is_platform_arm() or is_platform_mac() or is_platform_windows():
-            # NOT RUN on Windows/macOS/ARM, only Ubuntu
+            # NOT RUN on Windows/macOS, only Ubuntu
             # - subprocess in CI can cause timeouts
             # - GitHub Actions do not support
             #   container services for the above OSs
-            # - CircleCI will probably hit the Docker rate pull limit
             pytest.skip(
-                "S3 tests do not have a corresponding service in "
-                "Windows, macOS or ARM platforms"
+                "S3 tests do not have a corresponding service on "
+                "Windows or macOS platforms"
             )
         else:
             # set in .github/workflows/unit-tests.yml