Remove undefined from fixtures

ee/spec/fixtures/api/schemas/public_api/v4/vulnerability.json

@@ -9,11 +9,11 @@
     "state": { "type": "string", "enum": ["detected", "resolved", "dismissed", "confirmed"] },
     "severity": {
       "type": "string",
-      "enum": ["undefined", "info", "unknown", "low", "medium", "high", "critical"]
+      "enum": ["info", "unknown", "low", "medium", "high", "critical"]
     },
     "confidence": {
       "type": "string",
-      "enum": ["undefined", "ignore", "unknown", "experimental", "low", "medium", "high", "confirmed"]
+      "enum": ["ignore", "unknown", "experimental", "low", "medium", "high", "confirmed"]
     },
     "report_type": {
       "type": "string",

ee/spec/fixtures/api/schemas/vulnerabilities/history.json

@@ -5,7 +5,6 @@
   ],
   "properties" : {
     "total": { "type" : "object" },
-    "undefined": { "type" : "object" },
     "ignore": { "type" : "object" },
     "unknown": { "type" : "object" },
     "experimental": { "type" : "object" },

ee/spec/fixtures/api/schemas/vulnerabilities/occurrence.json

@@ -17,11 +17,11 @@
     "create_vulnerability_feedback_dismissal_path": { "type": "string" },
     "confidence" : {
       "type": "string",
-      "enum": ["undefined", "ignore", "unknown", "experimental", "low", "medium", "high", "confirmed"]
+      "enum": ["ignore", "unknown", "experimental", "low", "medium", "high", "confirmed"]
     },
     "severity" : {
       "type": "string",
-      "enum": ["undefined", "info", "unknown", "low", "medium", "high", "critical"]
+      "enum": ["info", "unknown", "low", "medium", "high", "critical"]
     },
     "report_type": {
       "type": "string",

ee/spec/fixtures/api/schemas/vulnerabilities/summary.json

 {
   "type" : "object",
   "properties" : {
-    "undefined" : { "type": "integer" },
     "ignore" : { "type": "integer" },
     "unknown" : { "type": "integer" },
     "experimental" : { "type": "integer" },