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/.entry.json

@@ -37,14 +37,6 @@
             "display_via_github" : true,
             "entry_text" : "original source code"
         },
-        {
-            "file_path" : "boing-ball.mp4",
-            "inventory_order" : 100,
-            "OK_to_edit" : true,
-            "display_as" : "html",
-            "display_via_github" : false,
-            "entry_text" : "video of original Amiga bouncing ball demo"
-        },
         {
             "file_path" : "2011_eastman.tar.bz2",
             "inventory_order" : 1415926535,