Removing several deprecations

Comments:

1. `DocumentWriteOperation` - no comment as to why the enum value is deprecated, and it's referenced in multiple places that aren't deprecated.
2. `PlanBuilder` - not clear why `xmlAttributeSeq` is a problem.
3. `SemValue` - `stores` is used in multiple places.
4. `GSONHandle` - no comment as to why `getParser` is deprecated.
5. `MarkLogicServerException` - `getFailedRquest` is referenced in many places.

Author: rjrudin

marklogic-client-api/src/main/java/com/marklogic/client/MarkLogicServerException.java

@@ -94,7 +94,6 @@ public String getServerStackTrace() {
     return (failedRequest == null) ? null : failedRequest.getStackTrace();
   }
 
-  @Deprecated
   public FailedRequest getFailedRequest() {
     return failedRequest;
   }

marklogic-client-api/src/main/java/com/marklogic/client/document/DocumentWriteOperation.java

@@ -28,7 +28,7 @@
  * {@link DocumentWriteSet#disableDefault disableDefault}.
  */
 public interface DocumentWriteOperation extends Comparable<DocumentWriteOperation> {
-  public enum OperationType {
+  enum OperationType {
     /** This write operation (REST API mime part) sets the defaults for the
      * rest of the request.
      * @see <a href="http://docs.marklogic.com/guide/rest-dev/bulk#id_56498">
@@ -42,8 +42,8 @@ public enum OperationType {
      * <a href="http://docs.marklogic.com/guide/rest-dev/bulk#id_54554">
      * REST API Guide -&gt; Example: Reverting to System Default Metadata</a>
      */
-    @Deprecated
     DISABLE_METADATA_DEFAULT,
+
     /** This write operation (REST API mime part) creates or overwrites
      * one document and/or document metadata.
      * @see <a href="http://docs.marklogic.com/guide/rest-dev/bulk#id_33756">
@@ -128,7 +128,7 @@ public static DocumentUriMaker uriMaker(String format) throws IllegalArgumentExc
 
         if(format == null || format.length() == 0)
             throw new IllegalArgumentException("Format cannot be null or empty");
-        
+
         final class FormatUriMaker {
             private String uriFormat;