refactor: removed a unnecessary if/else

Author: AndreaPontrandolfo

lib/rules/ensure-matching-remove-event-listener.js

@@ -95,19 +95,10 @@ module.exports = {
         }
         if (hasAddEventListener) {
           if (!hasRemoveEventListener) {
-            if (!hasReturnStatement) {
-              const messageId = 'requiredCleanup';
-
-              report(context, messages, messageId, {
-                node,
-              });
-            } else {
-              const messageId = 'requiredRemoveEventListener';
-
-              report(context, messages, messageId, {
-                node,
-              });
-            }
+            const messageID = hasReturnStatement ? 'requiredRemoveEventListener' : 'requiredCleanup';
+            report(context, messages[messageID], messageID, {
+              node,
+            });
           }
         }
       }