spi: remove unnecessary imports

sbourdeauducq · sbourdeauducq · commit 5b02c49e3b90 · 2017-08-31T15:29:20.000+08:00
diff --git a/misoc/cores/spi.py b/misoc/cores/spi.py
@@ -1,6 +1,4 @@
 import collections
-from operator import or_
-from functools import reduce
 
 from migen import *
 from migen.genlib.fsm import FSM, NextState
