[json] move jsonValidation declaration for #88835

extensions/json/package.json

@@ -67,12 +67,6 @@
         "scopeName": "source.json.comments",
         "path": "./syntaxes/JSONC.tmLanguage.json"
       }
-    ],
-    "jsonValidation": [
-      {
-        "fileMatch": "*.schema.json",
-        "url": "http://json-schema.org/draft-07/schema#"
-      }
     ]
   }
 }