diff --git a/packages/@aws-cdk/cfnspec/spec-source/specification/000_cfn/500_Cognito_UserPool_UsernameConfiguration_patch.json b/packages/@aws-cdk/cfnspec/spec-source/specification/000_cfn/500_Cognito_UserPool_UsernameConfiguration_patch.json
deleted file mode 100644
index 2e921a70e94cf..0000000000000
--- a/packages/@aws-cdk/cfnspec/spec-source/specification/000_cfn/500_Cognito_UserPool_UsernameConfiguration_patch.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-    "PropertyTypes": {
-        "AWS::Cognito::UserPool.UsernameConfiguration": {
-            "patch": {
-                "description": "make UserPool.UsernameConfiguration.CaseSensitive optional",
-                "operations": [
-                    {
-                        "op": "replace",
-                        "path": "/Properties/CaseSensitive/Required",
-                        "value": false
-                    }
-                ]
-            }
-        }
-    }
-}
\ No newline at end of file