Delete specified multiple lines of a not in use batch file through another batch

[D4rks1d3r]

For example let's say i have the following program:

Code: [Select]

@echo off

start notepad.exe "C:\Users\Giovanni\Desktop\New folder\file1.txt"
echo file was opened

:flag
start notepad.exe "C:\Users\Giovanni\Desktop\New folder\file1.txt"
echo file was opened
And i want to delete only the first

Code: [Select]

start notepad.exe "C:\Users\Giovanni\Desktop\New folder\file1.txt" and

Code: [Select]

echo file was opened


How can i do that?? i'm a complete newbie so go easy on me.