MotdFileBasedConfig: Remove declaration of unthrown exception

Change-Id: Ibe66ad76fb45fd80d5aa7180a7a41bd0b1273d9d
diff --git a/src/main/java/com/googlesource/gerrit/plugins/motd/MotdFileBasedConfig.java b/src/main/java/com/googlesource/gerrit/plugins/motd/MotdFileBasedConfig.java
index 538465d..22d0236 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/motd/MotdFileBasedConfig.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/motd/MotdFileBasedConfig.java
@@ -116,8 +116,7 @@
     return motd;
   }
 
-  private static List<SubnetConfig> allSubnets(FileBasedConfig cfg)
-      throws ConfigInvalidException {
+  private static List<SubnetConfig> allSubnets(FileBasedConfig cfg) {
     Set<String> names = cfg.getSubsections("subnet");
     List<SubnetConfig> result = Lists.newArrayListWithCapacity(names.size());
     for (String name : names) {