Remove InvalidEventName exception due to it being unused

discord/client.py

@@ -27,7 +27,7 @@ DEALINGS IN THE SOFTWARE.
 from __future__ import print_function
 
 from . import endpoints
-from .errors import InvalidEventName, InvalidDestination, GatewayNotFound
+from .errors import *
 from .user import User
 from .channel import Channel, PrivateChannel
 from .server import Server

discord/errors.py

@@ -24,10 +24,6 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
 """
 
-class InvalidEventName(Exception):
-    """Thrown when an event from :meth:`Client.event` has an invalid name."""
-    pass
-
 class InvalidDestination(Exception):
     """Thrown when the destination from :meth:`Client.send_message` is invalid."""
     pass