[minor] Remove dummy text in left column

index.php

@@ -122,7 +122,7 @@ assert( '$screen >= 0', "By now \$screen should be set to a value >= 0." );
   <div class="container">
 	  <div class="row">
 		  <div class="col-md">
-			  One of three columns
+			  &nbsp;
 		  </div>
 		  <div class="col-md">
               <?php