meta-google: google-usb-network: Don't wait for phosphor-ipmi-host

This is not needed for runtime service to work correctly as the bridges
on both sides come up before the USB device is present anyway.

Change-Id: I27b6ad5b265ff18f78f41388d26b02ced39749ae
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/networking/google-usb-network/usb_network.service.m4 b/meta-google/recipes-google/networking/google-usb-network/usb_network.service.m4
index 14f0d68..7893ba4 100644
--- a/meta-google/recipes-google/networking/google-usb-network/usb_network.service.m4
+++ b/meta-google/recipes-google/networking/google-usb-network/usb_network.service.m4
@@ -11,7 +11,6 @@
 dnl
 [Unit]
 Description=USB Gadget
-After=phosphor-ipmi-host.service
 
 [Service]
 Type=oneshot