In the Find and Replace dialog:
- under Search Mode select Regular Expression
- set Find What to
/.*$ - leave Replace With empty
This is replace any slash and all the text after it until the end of line with nothing. It uses a regular expression so it looks convoluted but it is well worth learning as regular expressions are insanely useful for lots of things.
Basically:
/isn’t a special character so it just matches a/.is a wildcard that matches a single character. To match a literal.use\.*is a wildcard that matches zero of more of the preceding character. Soa*would match zero or moreaand.*would match zero of more of any character.$matches the end of a line. To match a literal$use\$
A few other special characters:
\is the escape character – use it to turn special characters into normal characters. Yo match a literal\use\\+is a wildcard that matches one of more of the preceding character. Soa+would match one or moreaand.+would match one of more of any character.^matches the start of a line. To match a literal^use\^(and)make a match group. To match literal(or)use\(and\)
And there are more special characters including [, ], { and } along with others that I won’t mention.