Revert "Add image scope scanning option to the Linux detector"

[zhenghao104]

Reverts #1600 to unblock component detection rollout

[github-actions]

👋 Hi! It looks like you modified some files in the Detectors folder.
You may need to bump the detector versions if any of the following scenarios apply:

• The detector detects more or fewer components than before
• The detector generates different parent/child graph relationships than before
• The detector generates different devDependencies values than before

If none of the above scenarios apply, feel free to ignore this comment 🙂

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.1%. Comparing base (a5fe5ed) to head (dd489e1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1613     +/-   ##
=======================================
- Coverage   90.1%   90.1%   -0.1%     
=======================================
  Files        435     435             
  Lines      37461   37357    -104     
  Branches    2315    2309      -6     
=======================================
- Hits       33769   33662    -107     
- Misses      3216    3220      +4     
+ Partials     476     475      -1     

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[Copilot]

Pull request overview

This PR reverts PR #1600, which added an image scope scanning option to the Linux detector. The revert removes the configurable scanning scope feature to unblock the component detection cloudbuild rollout.

Changes:

• Removed the LinuxScannerScope enum and all related scope parameter handling
• Restored hardcoded --scope all-layers behavior in the Linux scanner
• Removed tests and documentation for the Linux.ImageScanScope detector argument

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/Microsoft.ComponentDetection.Detectors/linux/LinuxScannerScope.cs	Deleted the LinuxScannerScope enum file
src/Microsoft.ComponentDetection.Detectors/linux/ILinuxScanner.cs	Removed scope parameter from interface method signature
src/Microsoft.ComponentDetection.Detectors/linux/LinuxScanner.cs	Removed scope parameter handling and restored hardcoded all-layers scope
src/Microsoft.ComponentDetection.Detectors/linux/LinuxContainerDetector.cs	Removed GetScanScope() method and scope parameter passing
test/Microsoft.ComponentDetection.Detectors.Tests/LinuxScannerTests.cs	Removed scope-related test cases and unused using System; import
test/Microsoft.ComponentDetection.Detectors.Tests/LinuxContainerDetectorTests.cs	Removed scope parameter from mock setups and deleted scope-related tests
docs/detectors/linux.md	Removed documentation for the Linux.ImageScanScope detector argument