Remove incorrect assertion in ConfigItem::ActivateItems

There is an assertion that after activating items, all these items are
active, which sounds reasonable at first. However, with concurrent API
queries, some of these could already be deleted and therefore be
deactivated again.

lib/config/configitem.cpp

@@ -697,17 +697,6 @@ bool ConfigItem::ActivateItems(const std::vector<ConfigItem::Ptr>& newItems, boo
 		}
 	}
 
-#ifdef I2_DEBUG
-	for (const ConfigItem::Ptr& item : newItems) {
-		ConfigObject::Ptr object = item->m_Object;
-
-		if (!object)
-			continue;
-
-		ASSERT(object && object->IsActive());
-	}
-#endif /* I2_DEBUG */
-
 	if (!silent)
 		Log(LogInformation, "ConfigItem", "Activated all objects.");