[Autoscaler] Move Resource Demand Scheduler Test to Small (#10399)

python/ray/tests/BUILD

@@ -31,6 +31,7 @@ py_test_module_list(
     "test_global_gc.py",
     "test_iter.py",
     "test_joblib.py",
+    "test_resource_demand_scheduler.py",
   ],
   size = "medium",
   extra_srcs = SRCS,
@@ -52,7 +53,6 @@ py_test_module_list(
     "test_output.py",
     "test_placement_group.py",
     "test_reconstruction.py",
-    "test_resource_demand_scheduler.py",
     "test_reference_counting_2.py",
     "test_reference_counting.py",
     "test_stress.py",