Find a Regex on Notepad++ How Delete all occurrences and leave only first occurrence of each URL per line

Search: Find a Regex on Notepad++ Captures The Urls On Each Line Having Duplicates Or Multiple Occurrences On The Same Line:

Replace: Delete all occurrences and leave only First occurrence of each URL per line and delete the ones that follow

My Solution

Regex: b((http/https?://S+))bs-s(?=.*?b1b)
Replaces With: Leave The Field Empty

this Removes The First Occurrence and keeps only the last Occurrence.
What I want ?? to do is to keep the first occurrence and delete the ones that follow

Sample:

Line1: https://site2.net/item1 - https://site2.net/item2 - https://site2.net/item3 -/*

Line2: https://site1.com/pageA - https://site1.com/pageB - https://site1.com/pageC - https://site1.com/pageA - https://site1.com/pageD - https://site1.com/pageC - https://site1.com/pageB - https://site1.com/pageD -/*

Desired Result :

Line1: https://site2.net/item1 - https://site2.net/item2 - https://site2.net/item3 -/*

Line2: https://site1.com/pageA - https://site1.com/pageB - https://site1.com/pageC - https://site1.com/pageD -/*