Deprecate remains of com.mongodb.util package

JAVA-3033

Author: jyemin

driver-legacy/src/main/com/mongodb/util/JSONParseException.java

@@ -26,7 +26,9 @@
  * { "x" : 3, "y" : 4, some invalid json.... }
  *                     ^
  * </pre>
+ * @deprecated there is no replacement for this class
  */
+@Deprecated
 public class JSONParseException extends RuntimeException {
 
     private static final long serialVersionUID = -4415279469780082174L;

driver-legacy/src/main/com/mongodb/util/ObjectSerializer.java

@@ -18,7 +18,9 @@
 
 /**
  * Interface describing methods for serializing an object to a string.
+ * @deprecated there is no replacement for this interface
  */
+@Deprecated
 public interface ObjectSerializer {
     /**
      * Serializes {@code obj} into {@code buf}.

driver-legacy/src/main/com/mongodb/util/Util.java

@@ -22,7 +22,9 @@
 
 /**
  * General utilities that are useful throughout the driver.
+ * @deprecated there is no replacement for this class
  */
+@Deprecated
 public class Util {
     /**
      * Converts the given byte buffer to a hexadecimal string using {@link java.lang.Integer#toHexString(int)}.