temporarily disable tpu from required checks (#20417)

Author: t-vi

.github/checkgroup.yml

@@ -89,14 +89,15 @@ subprojects:
     checks:
       - "lightning.Benchmarks"
 
-  - id: "pytorch-lightning: TPU workflow"
-    paths:
-      # tpu CI availability is very limited, so we only require tpu tests
-      # to pass when their configurations are modified
-      - ".github/workflows/tpu-tests.yml"
-      - "tests/tests_pytorch/run_tpu_tests.sh"
-    checks:
-      - "test-on-tpus (pytorch, pjrt, v4-8)"
+  # Temporarily disabled
+  #  - id: "pytorch-lightning: TPU workflow"
+  #    paths:
+  #      # tpu CI availability is very limited, so we only require tpu tests
+  #      # to pass when their configurations are modified
+  #      - ".github/workflows/tpu-tests.yml"
+  #      - "tests/tests_pytorch/run_tpu_tests.sh"
+  #    checks:
+  #      - "test-on-tpus (pytorch, pjrt, v4-8)"
 
   - id: "fabric: Docs"
     paths: