「関数」の節の演習問題1の別解を削除

[chvmvd]

次のような解答例に対して、

function max(a, b) {
  if (a > b) {
    return a;
  } else {
    return b;
  }
}

次のような別解も載せられていました。

function max(a, b) {
  if (a > b) {
    return a;
  }
  return b;
}

別解の内容はそれほど重要なことではないので、削除しました。

[Copilot]

Pull request overview

This PR removes an optional "note" block from the exercise 1 answer section in the "Functions" tutorial page. The note explained an alternative way to write the max function without the else keyword, which the PR author considers not essential. The corresponding sample files (max-no-else/) are also deleted.

Changes:

• Removed the :::note block containing the alternative max implementation from docs/1-trial-session/09-functions/index.mdx.
• Deleted the max-no-else sample directory and its files (script.js and index.html).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
docs/1-trial-session/09-functions/index.mdx	Removed the :::note block with the alternative max function (no else) and its <ViewSource> link.
docs/1-trial-session/09-functions/_samples/max-no-else/script.js	Deleted sample JS file for the removed alternative solution.
docs/1-trial-session/09-functions/_samples/max-no-else/index.html	Deleted sample HTML file for the removed alternative solution.

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