removed unecessary extend

Hunting Queries/SecurityEvent/NewChildProcessOfW3WP.yaml

@@ -28,7 +28,6 @@ query: |
   | where ParentProcessName hassuffix "w3wp.exe"
   | extend ProcessHost = strcat(Process, "-", Computer)
   | where ProcessHost !in (known_procs)
-  | extend timekey = bin(TimeGenerated, 1h)
   | project-reorder TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId
   | extend timestamp = TimeGenerated, HostCustomEntity = Computer, AccountCustomEntity = Account
 entityMappings: