Clean up toolcache PR checks

Author: henrymercer

.github/workflows/__extract-direct-to-toolcache.yml renamed to .github/workflows/__bundle-toolcache.yml

@@ -1,13 +1,11 @@
-name: "Extract directly to toolcache"
-description: "Extract the CodeQL bundle directly into the toolcache"
+name: "Bundle: Caching checks"
+description: "The CodeQL bundle should be cached within the toolcache"
 versions:
   - linked
 operatingSystems:
   - macos
   - ubuntu
   - windows
-env:
-  CODEQL_ACTION_EXTRACT_TOOLCACHE: true
 steps:
   - name: Remove CodeQL from toolcache
     uses: actions/github-script@v7

.github/workflows/__zstd-bundle.yml renamed to .github/workflows/__bundle-zstd.yml

@@ -1,5 +1,5 @@
-name: "Zstandard bundle"
-description: "Test downloading a Zstandard-compressed CodeQL bundle"
+name: "Bundle: Zstandard checks"
+description: "A Zstandard CodeQL bundle should be extracted on supported operating systems"
 versions:
   - linked
 operatingSystems: