EntityManager: Flip condition to start removed timer

Use the condition to select the behaviour we want rather than the one we
don't to improve readability.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I0f31d6d093043d1edc8292b8f2acb184854ba033
diff --git a/src/EntityManager.cpp b/src/EntityManager.cpp
index d409365..c0c79aa 100644
--- a/src/EntityManager.cpp
+++ b/src/EntityManager.cpp
@@ -1024,11 +1024,10 @@
                              &objServer]() {
                         postToDbus(newConfiguration, systemConfiguration,
                                    objServer);
-                        if (count != instance)
+                        if (count == instance)
                         {
-                            return;
+                            startRemovedTimer(timer, systemConfiguration);
                         }
-                        startRemovedTimer(timer, systemConfiguration);
                     });
                 });
             });