Remove first argument of Schema::isModule

The argument wasn't used anywhere, I have no idea why it was there.

Change-Id: I21b9c3fa323187e5f0484d4db9e2c543f9a6f7cf
diff --git a/src/schema.hpp b/src/schema.hpp
index b5e17a2..b8d74a8 100644
--- a/src/schema.hpp
+++ b/src/schema.hpp
@@ -66,7 +66,7 @@
 
     virtual bool isContainer(const schemaPath_& location, const ModuleNodePair& node) const = 0;
     virtual bool isLeaf(const schemaPath_& location, const ModuleNodePair& node) const = 0;
-    virtual bool isModule(const schemaPath_& location, const std::string& name) const = 0;
+    virtual bool isModule(const std::string& name) const = 0;
     virtual bool isList(const schemaPath_& location, const ModuleNodePair& node) const = 0;
     virtual bool isPresenceContainer(const schemaPath_& location, const ModuleNodePair& node) const = 0;
     virtual bool leafEnumHasValue(const schemaPath_& location, const ModuleNodePair& node, const std::string& value) const = 0;