Fixed compile issue due to package.xml API upgrade

Author: afawcettffdc

fflib-sample-code/src/objects/OpportunitySettings__c.object

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <CustomObject xmlns="http://soap.sforce.com/2006/04/metadata">
     <customSettingsType>Hierarchy</customSettingsType>
-    <customSettingsVisibility>Public</customSettingsVisibility>
     <enableEnhancedLookup>false</enableEnhancedLookup>
     <enableFeeds>false</enableFeeds>
     <fields>
@@ -15,4 +14,5 @@
         <unique>false</unique>
     </fields>
     <label>Opportunity Settings</label>
+    <visibility>Public</visibility>
 </CustomObject>