removed login with key press funcitonality

public/js/app.js

@@ -902,9 +902,4 @@ buildCategoryFilter();
 loadContributions();
 
 // Show Welcome Modal on first Visit
-checkWelcomeModal();
-
-// Submits Login with Key Press
-document.getElementById('user-name-input').addEventListener('keydown', function (e) {
-    if (e.key === 'Enter') submitLogin();
-});
+checkWelcomeModal();