remove cleanup

build/linux_back_compat.yml

@@ -39,6 +39,4 @@ jobs:
       IOTHUB_CONN_STRING_INVALIDCERT: $(IOTHUB-CONN-STRING-INVALIDCERT)
       DPS_GLOBALDEVICEENDPOINT_INVALIDCERT: $(DPS-GLOBALDEVICEENDPOINT-INVALIDCERT)
       PROVISIONING_CONNECTION_STRING_INVALIDCERT: $(PROVISIONING-CONNECTION-STRING-INVALIDCERT)
-  - script: sudo rm -rf $(Agent.BuildDirectory)/*
-    displayName: 'cleanup'
     condition: always()