fix ruff

Author: david-gang

instrumentation/opentelemetry-instrumentation-system-metrics/tests/test_system_metrics.py

@@ -956,30 +956,21 @@ def test_runtime_get_count(self, mock_gc_get_count):
             f"process.runtime.{self.implementation}.gc_count",
             expected_gc_count,
         )
-        expected_gc_collections = [
-            _SystemMetricsResult({"generation": "0"}, 1),
-            _SystemMetricsResult({"generation": "1"}, 2),
-            _SystemMetricsResult({"generation": "2"}, 3),
-        ]
-        self._test_metrics(
-            "cpython.gc.collections",
-            expected_gc_collections,
-        )
 
     @mock.patch("gc.get_count")
     @skipIf(
         python_implementation().lower() == "pypy", "not supported for pypy"
     )
-    def test_runtime_get_count(self, mock_gc_get_count):
+    def test_runtime_get_gc_collections(self, mock_gc_get_count):
         mock_gc_get_count.configure_mock(**{"return_value": (1, 2, 3)})
-
-        expected = [
-            _SystemMetricsResult({"count": "0"}, 1),
-            _SystemMetricsResult({"count": "1"}, 2),
-            _SystemMetricsResult({"count": "2"}, 3),
+        expected_gc_collections = [
+            _SystemMetricsResult({"generation": "0"}, 1),
+            _SystemMetricsResult({"generation": "1"}, 2),
+            _SystemMetricsResult({"generation": "2"}, 3),
         ]
         self._test_metrics(
-            f"process.runtime.{self.implementation}.gc_count", expected
+            "cpython.gc.collections",
+            expected_gc_collections,
         )
 
     @mock.patch("psutil.Process.num_ctx_switches")