Fix SonarQube issues (2) (#2205)

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

hawkbit-rest-core/src/test/java/org/eclipse/hawkbit/rest/AbstractRestIntegrationTest.java

@@ -44,7 +44,7 @@ public abstract class AbstractRestIntegrationTest extends AbstractIntegrationTes
     private CharacterEncodingFilter characterEncodingFilter;
 
     @BeforeEach
-    public void before() throws Exception {
+    public void before() {
         mvc = createMvcWebAppContext(webApplicationContext).build();
     }