Unnecessary brackets.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1604642 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math3/stat/descriptive/rank/Percentile.java

@@ -445,11 +445,10 @@ public class Percentile extends AbstractUnivariateStatistic implements Serializa
             case REMOVED:// Drop NaNs from data
                 work = removeAndSlice(values, begin, length, Double.NaN);
                 break;
-            case FAILED:{// just throw exception as NaN is un-acceptable
+            case FAILED:// just throw exception as NaN is un-acceptable
                 checkNotANumber(values, begin, length);
                 work = copyOf(values, begin, length);
                 break;
-            }
             default: //FIXED
                 work = copyOf(values,begin,length);
                 break;