fixup! src: support namespace options in configuration schema generation

Author: pmarchini

doc/node-config-schema.json

@@ -589,9 +589,6 @@
       "type": "object",
       "additionalProperties": false,
       "properties": {
-        "test-coverage-lines": {
-          "type": "number"
-        },
         "test-isolation": {
           "type": "string"
         }