Remove builtins imports

This module is not intended to be used directly in most cases, per:
https://docs.python.org/3/library/builtins.html

None of our usages warrant the explicit import. We also avoid some
confusion as folks dig to see what we are doing to require
importing builtins directly.

evennia/server/profiling/dummyrunner.py

@@ -32,8 +32,6 @@ for instructions on how to define this module.
 """
 
 
-from builtins import range
-
 import sys
 import time
 import random