Python: Update change note and extractor config

Removes the previously added extractor option and updates the change
note to explain how to use `paths-ignore` to exclude files in hidden
directories.

python/codeql-extractor.yml

@@ -44,10 +44,3 @@ options:
       Use this setting with caution, the Python extractor requires Python 3 to run.
     type: string
     pattern: "^(py|python|python3)$"
-  skip_hidden_directories:
-    title: Controls whether hidden directories are skipped during extraction.
-    description: >
-      By default, CodeQL will extract all Python files, including ones located in hidden directories. By setting this option to true, these hidden directories will be skipped instead.
-      Accepted values are true and false.
-    type: string
-    pattern: "^(true|false)$"

python/ql/lib/change-notes/2025-04-30-extract-hidden-files-by-default.md

@@ -2,4 +2,4 @@
 category: minorAnalysis
 ---
 
-- The Python extractor now extracts files in hidden directories by default. A new extractor option, `skip_hidden_directories` has been added as well. Setting it to `true` will make the extractor revert to the old behavior.
+- The Python extractor now extracts files in hidden directories by default. If you would like to skip hidden files, add `paths-ignore: ["**/.*/**"]` to your [Code Scanning config](https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/customizing-your-advanced-setup-for-code-scanning#specifying-directories-to-scan). When using the CodeQL CLI for extraction, specify the configuration (creating the configuration file if necessary) using the `--codescanning-config` option.