Revert "Fix matplotlib warnings"

This reverts commit f324108.

Author: hamdanal

tests/test_plotting.py

@@ -486,23 +486,22 @@ def test_plot_scatter(close_figures) -> None:
         ),
         Axes,
     )
-    with pytest.warns(UserWarning):
-        check(
-            assert_type(
-                IRIS_DF.plot.scatter(x="SepalLength", y="SepalWidth", subplots=True),
-                npt.NDArray[np.object_],
-            ),
-            np.ndarray,
-        )
-        check(
-            assert_type(
-                IRIS_DF.plot(
-                    x="SepalLength", y="SepalWidth", subplots=True, kind="scatter"
-                ),
-                npt.NDArray[np.object_],
+    check(
+        assert_type(
+            IRIS_DF.plot.scatter(x="SepalLength", y="SepalWidth", subplots=True),
+            npt.NDArray[np.object_],
+        ),
+        np.ndarray,
+    )
+    check(
+        assert_type(
+            IRIS_DF.plot(
+                x="SepalLength", y="SepalWidth", subplots=True, kind="scatter"
             ),
-            np.ndarray,
-        )
+            npt.NDArray[np.object_],
+        ),
+        np.ndarray,
+    )
 
 
 def test_plot_keywords(close_figures):