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/static_schema.cpp b/src/static_schema.cpp
index 8800a9a..ad2025c 100644
--- a/src/static_schema.cpp
+++ b/src/static_schema.cpp
@@ -31,7 +31,7 @@
     return childrenRef.find(node) != childrenRef.end();
 }
 
-bool StaticSchema::isModule(const schemaPath_&, const std::string& name) const
+bool StaticSchema::isModule(const std::string& name) const
 {
     return m_modules.find(name) != m_modules.end();
 }