remove nullable as it is nullable by default

FrogTheFrog · web-flow · commit 395f734c8e72 · 2018-11-01T20:19:58.000+02:00
diff --git a/inputfiles/overridingTypes.json b/inputfiles/overridingTypes.json
@@ -2227,7 +2227,6 @@
                 "properties": {
                     "property": {
                         "srcElement": {
-                            "nullable": 1,
                             "deprecated": 1
                         }
                     }
