refactor: Remove dead code

[aragon999]

1. Why is this change necessary?

Cleanup dead code.

The code which is removed, is not needed, since on the one hand loadModule is a private method, which is only called if this->modules_container[$name] is null. On the other hand, $name will never be a valid path, since the getModule method always appends an s in front of the $name.

2. Checklist

• I have written tests and verified that they fail without my change
• I have squashed any insignificant commits
• This change has comments for package types, values, functions, and non-obvious lines of code
• I have read the contribution requirements and fulfil them.

[mitelg]

hey @aragon999

thanks for your PR, it looks good to me 👍

please rebase your branch

[github-actions]

	Warnings
⚠️	The Pull Request doesn't contain any changes to the Upgrade file

[mitelg]

thanks for your contribution @aragon999 👍🎉💙