PDFBOX-5660: Sonar fix

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1924830 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

examples/src/test/java/org/apache/pdfbox/examples/pdmodel/TestCreateSignature.java

@@ -48,7 +48,6 @@
 import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
 import java.security.Security;
-import java.security.UnrecoverableKeyException;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateException;
 import java.security.cert.CertificateFactory;
@@ -454,18 +453,14 @@ void testCreateVisibleSignature2(boolean externallySign)
      * been signed before.
      * 
      * @throws IOException
-     * @throws NoSuchAlgorithmException
-     * @throws CertificateException
-     * @throws UnrecoverableKeyException
      * @throws CMSException
      * @throws OperatorCreationException
      * @throws GeneralSecurityException
      * @throws TSPException
      * @throws CertificateVerificationException
      */
     @Test
-    void testPDFBox3978() throws IOException, NoSuchAlgorithmException, 
-                                        CertificateException, UnrecoverableKeyException, 
+    void testPDFBox3978() throws IOException,
                                         CMSException, OperatorCreationException, GeneralSecurityException,
                                         TSPException, CertificateVerificationException
     {