power-on: remove redundant before instruction

This service already has a Before=obmc-power-start@.target which itself
runs before obmc-power-on@.target.

(From meta-phosphor rev: 84de9636c93b8b42f0120c8573586b4829b7600d)

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ia51a8030cf7f97b9f9090fa1ec5c7266d8014382
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power/op-wait-power-on@.service b/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power/op-wait-power-on@.service
index 1e65d08..bc64595 100644
--- a/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power/op-wait-power-on@.service
+++ b/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power/op-wait-power-on@.service
@@ -1,6 +1,5 @@
 [Unit]
 Description=Wait for Power%i to turn on
-Before=obmc-power-on@%i.target
 Wants=obmc-power-start@%i.target
 Before=obmc-power-start@%i.target
 Wants=mapper-wait@-org-openbmc-control-power%i.service