Merge pull request #225006 from rod-trent/patch-6

Update threat-intelligence-integration.md

Author: prmerger-automator[bot]

articles/sentinel/threat-intelligence-integration.md

@@ -59,10 +59,6 @@ To connect to TAXII threat intelligence feeds, follow the instructions to [conne
 
 - [Learn about Kaspersky integration with Microsoft Sentinel](https://support.kaspersky.com/15908)
 
-### PickupSTIX
-
-- [Fill out this web form](https://www.celerium.com/pickupstix) to get the API Root, Collection IDs, Username, and Password for the free TAXII 2.1 Feeds on the PickupSTIX TAXII Server.
-
 ### Pulsedive
 
 - [Learn about Pulsedive integration with Microsoft Sentinel](https://techcommunity.microsoft.com/t5/microsoft-sentinel-blog/import-pulsedive-feed-into-microsoft-sentinel/ba-p/3478953)