CodeGen from PR 15793 in Azure/azure-rest-api-specs

Merge 00d5baa346878802a692f0ff2176356978a460d8 into 4646325afce73d40df9984b0984792d69225a0f4

Author: SDKAuto

schemas/2020-01-01/Microsoft.SecurityInsights.json

@@ -797,7 +797,6 @@
             {
               "type": "string",
               "enum": [
-                "Critical",
                 "High",
                 "Medium",
                 "Low",