Add NTCP 1 removal releases and dates

i2p2www/pages/site/docs/transport/ntcp.html

 {% extends "global/layout.html" %}
 {% block title %}{% trans %}NTCP (NIO-based TCP){% endtrans %}{% endblock %}
-{% block lastupdated %}{% trans %}October 2021{% endtrans %}{% endblock %}
+{% block lastupdated %}2021-10{% endblock %}
 {% block accuratefor %}0.9.52{% endblock %}
 {% block content %}
 
@@ -8,6 +8,8 @@
 
 <p>{% trans transports=site_url('docs/transport'), ssu=site_url('docs/transport/ssu'), ntcp2=site_url('docs/spec/ntcp2') -%}
 DEPRECATED, NO LONGER SUPPORTED.
+Disabled by default as of 0.9.40 2019-05.
+Support removed as of 0.9.50 2021-05.
 Replaced by <a href="{{ ntcp2 }}">NTCP2</a>.
 NTCP is a Java NIO-based transport introduced in I2P release 0.6.1.22.
 Java NIO (new I/O) does not suffer from the 1 thread per connection issues of the old TCP transport.