Drop TraceDumpExample. Closes #35 (#71)

diff --git a/contrib/import-control.xml b/contrib/import-control.xml
index f4628ff..e8b98dc 100644
--- a/contrib/import-control.xml
+++ b/contrib/import-control.xml
@@ -29,15 +29,9 @@
     <allow pkg="org.apache.accumulo.minicluster"/>
     <allow pkg="org.apache.accumulo.hadoop.mapreduce"/>
 
-    <!-- exceptions for this project -->
-    <allow pkg="org.apache.accumulo.core.conf"/>
+    <!-- exception for the constraints example -->
     <allow class="org.apache.accumulo.core.constraints.Constraint"/>
 
-    <!-- TODO refactor code to remove the following exceptions -->
-    <allow class="org.apache.accumulo.tracer.TraceDump"/>
-    <allow class="org.apache.accumulo.core.trace.DistributedTrace"/>
-    <!-- End TODO section -->
-
     <!-- disallow everything else coming from accumulo -->
     <disallow pkg="org.apache.accumulo"/>
 </import-control>
diff --git a/src/main/java/org/apache/accumulo/examples/client/TraceDumpExample.java b/src/main/java/org/apache/accumulo/examples/client/TraceDumpExample.java
deleted file mode 100644
index 36bff49..0000000
--- a/src/main/java/org/apache/accumulo/examples/client/TraceDumpExample.java
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.accumulo.examples.client;
-
-import org.apache.accumulo.core.client.AccumuloClient;
-import org.apache.accumulo.core.client.AccumuloException;
-import org.apache.accumulo.core.client.AccumuloSecurityException;
-import org.apache.accumulo.core.client.Scanner;
-import org.apache.accumulo.core.client.TableNotFoundException;
-import org.apache.accumulo.core.conf.ClientProperty;
-import org.apache.accumulo.core.data.Range;
-import org.apache.accumulo.core.security.TablePermission;
-import org.apache.accumulo.examples.cli.ClientOnDefaultTable;
-import org.apache.accumulo.examples.cli.ScannerOpts;
-import org.apache.accumulo.tracer.TraceDump;
-import org.apache.hadoop.io.Text;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.beust.jcommander.Parameter;
-
-/**
- * Example of using the TraceDump class to print a formatted view of a Trace
- */
-public class TraceDumpExample {
-  private static final Logger log = LoggerFactory.getLogger(TraceDumpExample.class);
-
-  static class Opts extends ClientOnDefaultTable {
-    public Opts() {
-      super("trace");
-    }
-
-    @Parameter(names = {"--traceid"},
-        description = "The hex string id of a given trace, for example 16cfbbd7beec4ae3")
-    public String traceId = "";
-  }
-
-  public void dump(Opts opts)
-      throws TableNotFoundException, AccumuloException, AccumuloSecurityException {
-
-    if (opts.traceId.isEmpty()) {
-      throw new IllegalArgumentException("--traceid option is required");
-    }
-
-    try (AccumuloClient client = opts.createAccumuloClient()) {
-      final String principal = ClientProperty.AUTH_PRINCIPAL.getValue(opts.getClientProperties());
-      final String table = opts.getTableName();
-      if (!client.securityOperations().hasTablePermission(principal, table, TablePermission.READ)) {
-        client.securityOperations().grantTablePermission(principal, table, TablePermission.READ);
-        try {
-          Thread.sleep(1000);
-        } catch (InterruptedException e) {
-          Thread.currentThread().interrupt();
-          throw new RuntimeException(e);
-        }
-        while (!client.securityOperations().hasTablePermission(principal, table,
-            TablePermission.READ)) {
-          log.info("{} didn't propagate read permission on {}", principal, table);
-          try {
-            Thread.sleep(1000);
-          } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-            throw new RuntimeException(e);
-          }
-        }
-      }
-      Scanner scanner = client.createScanner(table, opts.auths);
-      scanner.setRange(new Range(new Text(opts.traceId)));
-      TraceDump.printTrace(scanner, System.out::println);
-    }
-  }
-
-  public static void main(String[] args)
-      throws TableNotFoundException, AccumuloException, AccumuloSecurityException {
-    TraceDumpExample traceDumpExample = new TraceDumpExample();
-    Opts opts = new Opts();
-    ScannerOpts scannerOpts = new ScannerOpts();
-    opts.parseArgs(TraceDumpExample.class.getName(), args, scannerOpts);
-
-    traceDumpExample.dump(opts);
-  }
-
-}