updated metadata for _index.md

Author: predso01

content/learning-paths/servers-and-cloud-computing/snort3-multithreading/_index.md

@@ -30,10 +30,6 @@ tools_software_languages:
 operatingsystems:
     - Linux
 
-test_maintenance: true
-test_images:
-- ubuntu:latest
-
 ### FIXED, DO NOT MODIFY
 # ================================================================================
 weight: 1                       # _index.md always has weight of 1 to order correctly