meta-google: gbmc-bridge: Remove defunct networkd stanzas

IPv6PrefixDelegation is now called IPv6SendRA.

Change-Id: I6c6a6a7baf9d60f6f3a17d990aa9cc1dd3f65c75
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/networking/gbmc-bridge/-bmc-gbmcbr.network.in b/meta-google/recipes-google/networking/gbmc-bridge/-bmc-gbmcbr.network.in
index d77557e..c94be7f 100644
--- a/meta-google/recipes-google/networking/gbmc-bridge/-bmc-gbmcbr.network.in
+++ b/meta-google/recipes-google/networking/gbmc-bridge/-bmc-gbmcbr.network.in
@@ -6,10 +6,10 @@
 LLMNR=true
 MulticastDNS=true
 LinkLocalAddressing=ipv6
-IPv6PrefixDelegation=yes
+IPv6SendRA=yes
 @ADDR@
 [IPv6AcceptRA]
 DHCPv6Client=false
 RouteMetric=1056
-[IPv6PrefixDelegation]
+[IPv6SendRA]
 RouterLifetimeSec=0
diff --git a/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-gw-src.sh b/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-gw-src.sh
index 3c57b66..bcf5124 100644
--- a/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-gw-src.sh
+++ b/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-gw-src.sh
@@ -40,7 +40,7 @@
     local file
     for file in "${files[@]}"; do
       mkdir -p "$(dirname "$file")"
-      printf '[IPv6PrefixDelegation]\nRouterLifetimeSec=30\n' >"$file"
+      printf '[IPv6SendRA]\nRouterLifetimeSec=30\n' >"$file"
     done
   else
     rm -f "${files[@]}"