kindString dropped in JSON output changes

[aciccarello]

The last time the the specs were updated there were a number of spec files where the kindString property was dropped in the JSON output. This is most likely a bug.

diff --git a/src/test/converter/type-operator/specs.json b/src/test/converter/type-operator/specs.json
index dd6f81c..f103dfc 100644
--- a/src/test/converter/type-operator/specs.json
+++ b/src/test/converter/type-operator/specs.json
@@ -18,7 +18,6 @@
           "id": 5,
           "name": "GenericClass",
           "kind": 128,
-          "kindString": "Class",
           "flags": {
             "isExported": true
           },