Do not print disconnect error msg

@@ -696,7 +696,9 @@ public abstract class BaseEdgeControllerTest extends AbstractControllerTest {
         Assert.assertTrue(edgeImitator.findMessageByType(UserUpdateMsg.class).isPresent());
 
         edgeImitator.allowIgnoredTypes();
-        edgeImitator.disconnect();
+        try {
+            edgeImitator.disconnect();
+        } catch (Exception ignored) {}
 
         doDelete("/api/device/" + savedDevice.getId().getId().toString())
                 .andExpect(status().isOk());

@@ -178,7 +178,9 @@ abstract public class BaseEdgeTest extends AbstractControllerTest {
 
     @After
     public void afterTest() throws Exception {
-        edgeImitator.disconnect();
+        try {
+            edgeImitator.disconnect();
+        } catch (Exception ignored) {}
 
         loginSysAdmin();