removed ajs classic and hid the upgrade to 2.0 doc

Author: stayseesong

src/_data/sidenav/strat.yml

@@ -104,10 +104,6 @@ sections:
   section:
   - path: /connections/sources/catalog/libraries/website/javascript
     title: Analytics.js (JavaScript) Source
-  - path: /connections/sources/catalog/libraries/website/javascript/ajs-classic
-    title: Analytics.js Classic
-  - path: /connections/sources/catalog/libraries/website/javascript/upgrade-to-ajs2
-    title: Upgrade to Analytics.js 2.0
   - path: /connections/sources/catalog/libraries/website/javascript/supported-browsers
     title: Analytics.js supported browsers
   - path: /connections/sources/catalog/libraries/website/javascript/quickstart