TST: Remove buggy assertions

It's unclear what the expected behavior of Series.append(DataFrame)
is. Removing these assertions for now.

xref pandas-dev/pandas#30975

Author: TomAugspurger

dask/dataframe/tests/test_multi.py

@@ -1823,20 +1823,10 @@ def test_append2():
 
     assert_eq(ddf1.append(ddf2), ddf1.compute().append(ddf2.compute(), **concat_kwargs))
     assert_eq(ddf2.append(ddf1), ddf2.compute().append(ddf1.compute(), **concat_kwargs))
-    # Series + DataFrame
-    with pytest.warns(None):
-        # RuntimeWarning from pandas on comparing int and str
-        assert_eq(ddf1.a.append(ddf2), ddf1.a.compute().append(ddf2.compute()))
-        assert_eq(ddf2.a.append(ddf1), ddf2.a.compute().append(ddf1.compute()))
 
     # different columns
     assert_eq(ddf1.append(ddf3), ddf1.compute().append(ddf3.compute(), **concat_kwargs))
     assert_eq(ddf3.append(ddf1), ddf3.compute().append(ddf1.compute(), **concat_kwargs))
-    # Series + DataFrame
-    with pytest.warns(None):
-        # RuntimeWarning from pandas on comparing int and str
-        assert_eq(ddf1.a.append(ddf3), ddf1.a.compute().append(ddf3.compute()))
-        assert_eq(ddf3.b.append(ddf1), ddf3.b.compute().append(ddf1.compute()))
 
     # Dask + pandas
     assert_eq(
@@ -1847,15 +1837,6 @@ def test_append2():
         ddf2.append(ddf1.compute()),
         ddf2.compute().append(ddf1.compute(), **concat_kwargs),
     )
-    # Series + DataFrame
-    with pytest.warns(None):
-        # RuntimeWarning from pandas on comparing int and str
-        assert_eq(
-            ddf1.a.append(ddf2.compute()), ddf1.a.compute().append(ddf2.compute())
-        )
-        assert_eq(
-            ddf2.a.append(ddf1.compute()), ddf2.a.compute().append(ddf1.compute())
-        )
 
     # different columns
     assert_eq(
@@ -1866,15 +1847,6 @@ def test_append2():
         ddf3.append(ddf1.compute()),
         ddf3.compute().append(ddf1.compute(), **concat_kwargs),
     )
-    # Series + DataFrame
-    with pytest.warns(None):
-        # RuntimeWarning from pandas on comparing int and str
-        assert_eq(
-            ddf1.a.append(ddf3.compute()), ddf1.a.compute().append(ddf3.compute())
-        )
-        assert_eq(
-            ddf3.b.append(ddf1.compute()), ddf3.b.compute().append(ddf1.compute())
-        )
 
 
 def test_append_categorical():