remove unused functions

include/sp/protocol/Field.h

@@ -16,16 +16,6 @@ class Field {
 		return m_Value;
 	}
 
-	// Read (deserialise) and update internal value
-	void Read(DataBuffer& buffer) {
-		buffer >> m_Value;
-	}
-
-	// Write (serialise) internal value
-	void Write(DataBuffer& buffer) const {
-		buffer << m_Value;
-	}
-
 	Field& operator=(const ValueType& value) {
 		m_Value = value;
 		return *this;