Add untrustworthy extensions to RemovedPackages.md

Author: mariaghiondea

RemovedPackages.md

@@ -7,6 +7,9 @@ Scanning is not perfect. Community partnership is a very valuable part of the ov
 
 | Extension Identifier                  | Removal Date | Type                          |
 |---------------------------------------|--------------|-------------------------------|
+| openbase.openbase-theme | 5/24/2026 | Untrustworthy |
+| openbase.openbase-icons | 5/24/2026 | Untrustworthy |
+| openbase.openbase-vscode | 5/24/2026 | Untrustworthy |
 | AmirBenShimol3111824.amir-synapse-nexus | 5/24/2026 | Untrustworthy |
 | romanage.romanage | 5/23/2026 | Untrustworthy |
 | samkj.orchestrai | 5/22/2026 | Untrustworthy |