Update changedata.h

changedata.h

 #ifndef CHANGEDATA_H
 #define CHANGEDATA_H
 
-#include <ncurses.h>
-#include <mysql/mysql.h>
-#include "main.h"
-
 #define USER_OPTIONS_CNT 5
 #define ADMIN_OPTIONS_CNT 4
 #define ASSISTANT_OPTIONS_CNT 3
@@ -15,11 +11,6 @@
 //Function to print out universal option menu
 int optionMenu(char *options[], int count, char buffer[STR_MAX], int *row, int *col);
 
-//Functions to check if provided info is correct
-int CheckUser(MYSQL *con, char *username, char *password);
-int CheckBooking(MYSQL *con, char *bookingNumber, int *row, int *col);
-int CheckBookingDocument(MYSQL *con, char *bookingNumber, char *documentNumber, int *row, int *col);
-
 //Functions to change data in bookings
 void CheckIn(MYSQL *con, int *row, int *col);
 void ChangeName(MYSQL *con, char *booking, int *row, int *col);