Removed string content type from chatMessage

src/chat/chat-message-p.h

@@ -36,7 +36,6 @@ private:
 	// LinphoneAddress *from;
 	// LinphoneAddress *to;
 	std::shared_ptr<ErrorInfo> errorInfo;
-	std::string contentType;
 	std::string text;
 	bool isSecured = false;
 	bool isReadOnly = false;

src/chat/chat-message.cpp

@@ -86,11 +86,6 @@ shared_ptr<const ErrorInfo> ChatMessage::getErrorInfo () const {
 	return d->errorInfo;
 }
 
-string ChatMessage::getContentType () const {
-	L_D(const ChatMessage);
-	return d->contentType;
-}
-
 void ChatMessage::send () {
 	L_D(ChatMessage);