Revert "Merge pull request NginxProxyManager#4574 from tom-kst/develop"

This reverts commit 40f22d3, reversing
changes made to f327c1e.
Storing user/password instead of an API token is not a good idea. dns_cloudflare_api_token=abc123 was/is working fine.

Author: Dan Jabbour

global/certbot-dns-plugins.json

@@ -68,7 +68,7 @@
 		"package_name": "certbot-dns-cloudflare",
 		"version": "=={{certbot-version}}",
 		"dependencies": "cloudflare==4.0.* acme=={{certbot-version}}",
-		"credentials": "# Cloudflare API credentials used by Certbot\ndns_cloudflare_email = cloudflare@example.com\ndns_cloudflare_api_key = 0123456789abcdef0123456789abcdef01234",
+		"credentials": "# Cloudflare API token\ndns_cloudflare_api_token=0123456789abcdef0123456789abcdef01234567",
 		"full_plugin_name": "dns-cloudflare"
 	},
 	"cloudns": {