Remove trimUsername declaration from requirejs-config.js and use path inside template

Author: dankhrapiyush

app/code/Magento/Customer/view/frontend/requirejs-config.js

@@ -9,7 +9,6 @@ var config = {
             checkoutBalance:    'Magento_Customer/js/checkout-balance',
             address:            'Magento_Customer/address',
             changeEmailPassword: 'Magento_Customer/change-email-password',
-            trimUsername: 'Magento_Customer/js/trim-username',
             passwordStrengthIndicator: 'Magento_Customer/js/password-strength-indicator',
             zxcvbn: 'Magento_Customer/js/zxcvbn',
             addressValidation: 'Magento_Customer/js/addressValidation'

app/code/Magento/Customer/view/frontend/templates/form/login.phtml

@@ -46,7 +46,7 @@
 <script type="text/x-magento-init">
     {
         ".field.email": {
-            "trimUsername": {
+            "Magento_Customer/js/trim-username": {
                 "formSelector": "form.form-login"
             }
         }