Add support for empty queues.

Change-Id: Ia7837de83d737c31f70c16118c1e627692ced11a
diff --git a/aos/build/queues/output/q_struct.rb b/aos/build/queues/output/q_struct.rb
index 4c02ecd..f538bb3 100644
--- a/aos/build/queues/output/q_struct.rb
+++ b/aos/build/queues/output/q_struct.rb
@@ -76,11 +76,7 @@
     member_func = CPP::MemberFunc.new(type_class,"bool","EqualsNoTime")
     member_func.const = true
     type_class.add_member(member_func)
-    if @members.empty?
-      member_func.args << "const #{type_class.name} &/*other*/"
-    else
-      member_func.args << "const #{type_class.name} &other"
-    end
+    member_func.args << "const #{type_class.name} &other"
     member_func.suite << "if (!#{type_class.parent_class}::EqualsNoTime(other)) return false;" if type_class.parent_class
     @members.each do |elem|
       if elem.respond_to? :create_EqualsNoTime