PDFBOX-5660: Sonar fix

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1924862 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

tools/src/test/java/org/apache/pdfbox/tools/imageio/TestImageIOUtils.java

@@ -30,7 +30,6 @@
 import java.io.DataInputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
@@ -372,7 +371,7 @@ private void checkResolution(String filename, int expectedResolution)
      * @throws IOException if something goes wrong
      */
     private void checkBmpResolution(String filename, int expectedResolution)
-            throws FileNotFoundException, IOException
+            throws IOException
     {
         // BMP format explained here:
         // http://www.javaworld.com/article/2077561/learn-java/java-tip-60--saving-bitmap-files-in-java.html