Updating to work with java 1.6

Author: sk02241994

src/main/java/org/json/JSONObject.java

@@ -17,8 +17,6 @@
 import java.util.*;
 import java.util.Map.Entry;
 import java.util.regex.Pattern;
-import java.util.function.Function;
-import java.util.function.Supplier;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;