CI: remove sparse from nogil env

Author: lucascolley

.github/workflows/ci.yml

@@ -66,10 +66,14 @@ jobs:
           - {environment: tests-backends, x64_runner: ubuntu-latest}
           - {environment: tests-backends-py311, x64_runner: ubuntu-latest}
           # Non-default pixi task (default: tests-ci)
-          - {environment: tests-nogil, task: "tests --parallel-threads=4", no-coverage: true, x64_runner: ubuntu-latest}
+          - {
+              environment: tests-nogil,
+              task: "tests --parallel-threads=4",
+              no-coverage: true,
+              x64_runner: ubuntu-latest,
+            }
           - {environment: tests-run-deps, task: tests-run-deps-cov}
         exclude:
-          - {environment: tests-nogil, platform: macos} # data-apis/array-api-extra#900
           - {environment: tests-numpy1, platform: windows} # data-apis/array-api-extra#901
 
     environment: