Revert "4.22 FC VOL LIVEMIGRATE (#1)" - #17

This reverts commit d23f174.

FiberChannel volume migration from this PR was non-functional and never thoroughly tested:

• Offline (stopped VM): the agent LibvirtMigrateVolumeCommandWrapper selected the live block-copy path whenever the volume carried a vmName, ignoring VM power state. A stopped VM has no libvirt domain, so domainLookupByName threw "no domain with matching name 'i---VM'" and the migration failed with StorageUnavailableException.
• Online (running VM): never worked.

Reverting restores the known-good behavior where FiberChannel volume migrations use the offline migrateRegularVolume path.

Description

This PR...

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?