[lib][tests][clipboard] Remove nose

sgaist · sgaist · commit 995c84486d5f · 2021-10-23T14:01:15.000+02:00
diff --git a/IPython/lib/tests/test_clipboard.py b/IPython/lib/tests/test_clipboard.py
@@ -1,5 +1,3 @@
-import nose.tools as nt
-
 from IPython.core.error import TryNext
 from IPython.lib.clipboard import ClipboardEmpty
 from IPython.testing.decorators import skip_if_no_x11
@@ -18,4 +16,4 @@ def test_clipboard_get():
         # No clipboard access API available
         pass
     else:
-        nt.assert_is_instance(a, str)
+        assert isinstance(a, str)
