address comments -- remove duplicate getOFVersion method

keeping the getVersion() variant because it is used across all OFObjects
diff --git a/java_gen/templates/of_factory_class.java b/java_gen/templates/of_factory_class.java
index af0777d..eef1e04 100644
--- a/java_gen/templates/of_factory_class.java
+++ b/java_gen/templates/of_factory_class.java
@@ -45,10 +45,6 @@
     private final XidGenerator xidGenerator = XidGenerators.global();
     //:: #endif
 
-    public OFVersion getOFVersion() {
-        return OFVersion.OF_${factory.version.of_version};
-    }
-
     //:: for name, clazz in factory.interface.sub_factories.items():
     public ${clazz} ${name}() {
         return ${clazz}Ver${factory.version.of_version}.INSTANCE;
diff --git a/java_gen/templates/of_factory_interface.java b/java_gen/templates/of_factory_interface.java
index 17fe884..9a77aa7 100644
--- a/java_gen/templates/of_factory_interface.java
+++ b/java_gen/templates/of_factory_interface.java
@@ -58,7 +58,6 @@
     Match matchWildcardAll();
 //:: #endif
 
-    OFVersion getOFVersion();
     OFMessageReader<${factory.base_class}> getReader();
     OFVersion getVersion();
 //:: if factory.name == 'OFOxms':