chore: Remove old composer script

[tienvx]

This script is from version <=9.

In version 10 I refactored the example/ directory.

The public path in the script is not correct any more. And I don't think this script is useful. So I removed it.

[Lewiscowles1986]

Is it a case that there has been a breakage in this script in the refactor?

I'm all for removing it if the pipeline passes (which it does); but I'd just like to understand a little more.

[tienvx]

Here is the old index.php file.
Here is the new index.php file.

I don't change it much. I think the script is still working fine (just change the public's path).

But I think it's not useful. I can't think of any reason the script must be there.

[tienvx]

I tried remove that script and run tests on master branch and all tests are passed.