Remove boing-ball.mp4 from 2011/eastman

This video unfortunately comes from YouTube and so even if the link
eventually dies we should not have it here. A link was provided.

Updated the .entry.json and manifest in the index.html plus checked
other formatting issues.

2011/eastman/index.html

@@ -412,12 +412,12 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <pre><code>    make</code></pre>
 <h2 id="to-use">To use:</h2>
 <pre><code>    ./eastman</code></pre>
-<p>NOTE: to restore your cursor in your shell, try <code>reset</code>.</p>
+<p><strong>NOTE</strong>: to restore your cursor in your shell, try <code>reset</code>.</p>
 <h2 id="try">Try:</h2>
 <p>Run the program. Quit it (ctrl-c/intr). Resize your terminal window. Run it
 again. Try doing this a number of times with different sizes each time.</p>
 <pre><code>    ./eastman</code></pre>
-<p>NOTE: to restore your cursor in your shell, try <code>reset</code>.</p>
+<p><strong>NOTE</strong>: to restore your cursor in your shell, try <code>reset</code>.</p>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>This round program will generate a classic spherical result!</p>
 <p>You will need a terminal capable of displaying coloured ANSI
@@ -493,7 +493,6 @@ better. And so on.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/eastman/eastman.c">eastman.c</a> - entry source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/eastman/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/eastman/eastman.orig.c">eastman.orig.c</a> - original source code</li>
-<li><a href="boing-ball.mp4">boing-ball.mp4</a> - video of original Amiga bouncing ball demo</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>