Javadoc: Internal method doesn't need @SInCE tag

Author: garydgregory

src/main/java/org/apache/commons/lang3/ArrayUtils.java

@@ -5306,7 +5306,6 @@ public static long[] removeAll(final long[] array, final int... indices) {
      * @param array the input array, will not be modified, and may be {@code null}.
      * @param indices to remove.
      * @return new array of same type minus elements specified by the set bits in {@code indices}.
-     * @since 3.2
      */
     // package protected for access by unit tests
     static Object removeAll(final Object array, final BitSet indices) {