Schema: delete empty dtors in parser and wml_tag

src/serialization/parser.cpp

@@ -78,10 +78,6 @@ public:
 	{
 	}
 
-	~parser()
-	{
-	}
-
 	void operator()();
 
 private:

src/serialization/schema/tag.hpp

@@ -116,10 +116,6 @@ public:
 
 	wml_tag(const config&);
 
-	~wml_tag()
-	{
-	}
-
 	/** Prints information about tag to outputstream, recursively
 	 * is used to print tag info
 	 * the format is next