Added setTcpNoDelay to AMP connection. On Linux this leads to x10 faster roundtime on sends, as per #746.

evennia/server/amp.py

@@ -255,7 +255,9 @@ class AMPProtocol(amp.AMP):
         between server and portal. AMP calls it on both sides,
         so we need to make sure to only trigger resync from the
         portal side.
+
         """
+        self.transport.setTcpNoDelay(True) # this makes for a factor x10 faster sends!
         if hasattr(self.factory, "portal"):
             # only the portal has the 'portal' property, so we know we are
             # on the portal side and can initialize the connection.

evennia/server/sessionhandler.py

@@ -52,9 +52,6 @@ _IDLE_TIMEOUT = settings.IDLE_TIMEOUT
 _MAX_SERVER_COMMANDS_PER_SECOND = 100.0
 _MAX_SESSION_COMMANDS_PER_SECOND = 5.0
 
-
-_ERROR_COMMAND_OVERFLOW = "You entered commands too fast. Wait a moment and try again."
-
 def delayed_import():
     "Helper method for delayed import of all needed entities"
     global _ServerSession, _PlayerDB, _ServerConfig, _ScriptDB