Remove unecessary class

tests/unit/misc/test_cmdhistory.py

@@ -47,17 +47,12 @@ class TestConstructor:
 
 class TestCommandHistory:
 
-    """Create a setup for inheritance"""
+    """Tests for Command History."""
 
     @pytest.fixture(autouse=True)
     def setup(self):
         self.hist = History(history=HISTORY)
 
-
-class TestBrowsing(TestCommandHistory):
-
-    """Tests for the history browsing."""
-
     def test_is_browsing(self):
         """Test is_browsing()."""