change(stleary#871-strictMode): cleanup

chore: removed PII from json sample
chore: JSONParserConfiguration.java cleanup
chore: JSONTokener.java nextValue partial rollback

src/main/java/org/json/JSONParserConfiguration.java

@@ -23,11 +23,6 @@ public class JSONParserConfiguration extends ParserConfiguration {
      */
     private boolean strictMode;
 
-    /**
-     * Allows Single Quotes when strictMode is true. Has no effect if strictMode is false.
-     */
-    private boolean allowSingleQuotes;
-
     /**
      * Configuration with the default values.
      */