Search a string in a text and replace

Shell Programming and Scripting
1

i am having text file below

System will display value URGENT and proceed
System will display value URGENT and proceed
System will display value URGENT and proceed
...............................................................
...............................................................

i want to search a string URGENT and delete from URGENT to end of the line
the output should be

System will display value
System will display value
System will display value

2

What have you tried?