examples/basic: remove unroll example

examples/basic/multi_accumulator.py

@@ -1,23 +0,0 @@
-from migen.fhdl.structure import *
-from migen.transform.unroll import unroll_sync
-from migen.fhdl import verilog
-
-x = Signal(BV(4))
-y = Signal(BV(4))
-acc = Signal(BV(4), variable=True)
-z = Signal()
-
-sync = [
-	If(acc == 2, acc.eq(3)),
-	acc.eq(acc + x + y),
-	z.eq(acc == 0)
-]
-
-n = 5
-xs = [Signal(BV(4)) for i in range(n)]
-ys = [Signal(BV(4)) for i in range(n)]
-accs = [Signal(BV(4)) for i in range(n)]
-zs = [Signal() for i in range(n)]
-
-sync_u = unroll_sync(sync, {x: xs, y: ys, acc: accs, z: zs})
-print(verilog.convert(Fragment(sync=sync_u), ios=set(xs+ys+zs)))