[ts] Remove physics examples not available in 4.1

spine-ts/index.html

@@ -110,7 +110,6 @@
         <li>Player</li>
         <ul>
           <li><a href="/spine-player/example/example.html">Example</a></li>
-          <li><a href="/spine-player/example/physics.html">Physics</a></li>
           <li><a href="/spine-player/example/editor.html">Editor</a></li>
           <li>
             <a href="/spine-player/example/embedding-binary-example.html"
@@ -130,8 +129,6 @@
         <ul>
           <li><a href="/spine-webgl/example">Example</a></li>
           <li><a href="/spine-webgl/example/barebones.html">Barebones</a></li>
-          <li><a href="/spine-webgl/example/physics.html">Physics</a></li>
-          <li><a href="/spine-webgl/example/physics2.html">Physics II</a></li>
           <li>
             <a href="/spine-webgl/example/mix-and-match.html"
               >Mix &amp; match</a