Remove redundant use of public modifier.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1543279 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/collections4/Trie.java

@@ -42,6 +42,6 @@ public interface Trie<K, V> extends IterableSortedMap<K, V> {
      * @return a {@link SortedMap} view of this {@link Trie} with all elements whose
      *   key is prefixed by the search key
      */
-    public SortedMap<K, V> prefixMap(K key);
+    SortedMap<K, V> prefixMap(K key);
 
 }