copy vendor/magento/module-customer/view/frontend/templates/account/authentication-popup.phtmlvendor/magento/module-customer/view/frontend/templates/account/authentication-popup.phtml
to app/design/frontend/{your-template}/Magento_Customer/templates/account/authentication-popup.phtmlapp/design/frontend/{your-template}/Magento_Customer/templates/account/authentication-popup.phtml
And remove:
<?php if ($viewModel->isGlobalScopeEnabled()): ?>
,
"Magento_Customer/js/customer-global-session-loader": {}
<?php endif; ?>
, "Magento_Customer/js/customer-global-session-loader": {}