jquery: Don't advertise jQuery 1.x/2.x git builds

While we do have jQuery 1.x & 2.x git files, it's not worth advertising them -
we don't plan any new releases on these lines and - apart from different
unstable version strings - they don't differ from 1.12.4 & 2.2.4 respectively.
People wanting latest 1.x or 2.x code should just download the latest stable
versions from those lines.

Author: mgol

templates/jquery-git.hbs

@@ -16,16 +16,6 @@
 		<a href="/git/jquery-3.x-git.slim.js">slim</a>,
 		<a href="/git/jquery-3.x-git.slim.min.js">slim minified</a>
 	</li>
-	<li>
-		jQuery 2.x git build</a> -
-		<a href="/git/jquery-2.x-git.js">uncompressed</a>,
-		<a href="/git/jquery-2.x-git.min.js">minified</a>
-	</li>
-	<li>
-		jQuery 1.x git build</a> -
-		<a href="/git/jquery-1.x-git.js">uncompressed</a>,
-		<a href="/git/jquery-1.x-git.min.js">minified</a>
-	</li>
 	<li>
 		jQuery Migrate git build</a> -
 		<a href="/git/jquery-migrate-git.js">uncompressed</a>,