Replace 2x empty lines with a single one

src/main/java/org/apache/commons/io/file/attribute/FileTimes.java

@@ -97,7 +97,6 @@ public static boolean isUnixTime(final long seconds) {
         return Integer.MIN_VALUE <= seconds && seconds <= Integer.MAX_VALUE;
     }
 
-
     /**
      * Subtracts milliseconds from a source FileTime.
      *

src/main/java/org/apache/commons/io/input/ObservableInputStream.java

@@ -71,7 +71,6 @@ public void setObservers(final List<Observer> observers) {
 
     }
 
-
     /**
      * Builds instances of {@link ObservableInputStream}.
      *

src/test/java/org/apache/commons/io/input/BufferedFileChannelInputStreamTest.java

@@ -75,5 +75,4 @@ public void testReadAfterClose() throws Exception {
         }
     }
 
-
 }

src/test/java/org/apache/commons/io/input/CloseShieldInputStreamTest.java

@@ -79,7 +79,6 @@ public void testClose() throws IOException {
         assertEquals(data[0], byteArrayInputStream.read(), "read()");
     }
 
-
     @Test
     public void testReadAfterCose() throws Exception {
         final InputStream shadow;