rm redundant const

libwccl/ops/function.h

@@ -21,7 +21,7 @@ public:
 	/**
 	 * @returns Name of the function. By default it is same as raw name.
 	 */
-	virtual const std::string name(const Corpus2::Tagset&) const {
+	virtual std::string name(const Corpus2::Tagset&) const {
 		return raw_name();
 	}
 	/**