Remove dead Python library extraction code

Author: henrymercer

lib/init-action.js

@@ -624,17 +624,6 @@ async function run(startedAt: Date) {
         dependencyCachingResult.restoredKeys;
     }
 
-    // Suppress warnings about disabled Python library extraction.
-    if (await codeQlVersionAtLeast(codeql, "2.17.1")) {
-      // disabled by default, no warning
-    } else {
-      // disabled by default, prints warning if environment variable is not set
-      core.exportVariable(
-        "CODEQL_EXTRACTOR_PYTHON_DISABLE_LIBRARY_EXTRACTION",
-        "true",
-      );
-    }
-
     if (getOptionalInput("setup-python-dependencies") !== undefined) {
       logger.warning(
         "The setup-python-dependencies input is deprecated and no longer has any effect. We recommend removing any references from your workflows. See https://github.blog/changelog/2024-01-23-codeql-2-16-python-dependency-installation-disabled-new-queries-and-bug-fixes/ for more information.",