Update webgl_loader_md2.html (#25670)

Double index increment preventing all animations to be set in UI.

examples/webgl_loader_md2.html

@@ -320,8 +320,6 @@
 					playbackConfig[ clip.name ] = generateCallback( clip );
 					guiItems[ i ] = folder.add( playbackConfig, clip.name, clip.name );
 
-					i ++;
-
 				}
 
 			}