Disable 'inherited languages ' field in TD13 SP2

We just upgraded to TD13 SP2. How do I disable the 'Inherited languages' field on topics? We did not have this set in our pre-TD13 SP2 environment. In our new TD13 SP2, this field is 'active' and is adding the inherited languages from a topic's parent map. Currently, we don't want this behavior, although we may decide to turn it on at a later point. 

I thought this behavior was perhaps being controlled by the "XML Translation Settings" setting in the web client. I saw one of the <parameter name> fields looks like this:

<parameter name="MaxInheritedLanguageDepth">2</parameter>

I changed the value from '2' to '0' as shown here:

<parameter name="MaxInheritedLanguageDepth">2</parameter>

I saved the file and nothing happened. Does a Tridion CMS service have to restart? Is that the correct location to disable the inherited languages field?

thank you

paul