MINOR Cleaning up Java 1.6 warnings

SVN: 25525

authentication/source/java/ch/systemsx/cisd/authentication/ldap/LDAPPrincipalQuery.java

@@ -271,7 +271,6 @@ public final class LDAPPrincipalQuery implements ISelfTestable
      *            usually a big performance boost.
      * @return The list of principals matching the query
      */
-    @SuppressWarnings("null")
     public List<Principal> listPrincipalsByKeyValue(String key, String value,
             Collection<String> additionalAttributesOrNull, int limit)
     {
@@ -373,7 +372,6 @@ public final class LDAPPrincipalQuery implements ISelfTestable
                 config.getSecurityPrincipalPassword(), true);
     }
 
-    @SuppressWarnings("null")
     private DirContext createContextForDistinguishedName(String dn, String password,
             boolean useThreadContext) throws NamingException
     {