style: remove redundent else

Signed-off-by: Alexander Tkachev <sasha64sasha@gmail.com>

cloudevents/http/event.py

@@ -70,8 +70,7 @@ class CloudEvent:
     def __eq__(self, other: typing.Any) -> bool:
         if isinstance(other, CloudEvent):
             return self.data == other.data and self._attributes == other._attributes
-        else:
-            return False
+        return False
 
     # Data access is handled via `.data` member
     # Attribute access is managed via Mapping type