remove depericated --location

[s-ddavydenko]

Summary

Removes the deprecated --location / -l parameter from az quantum job commands. Job operations now derive the workspace location from the active workspace (set via az quantum workspace set) instead of accepting an independent, easily-mismatched value from the user.

Motivation

--location on az quantum job was redundant — the location is already an intrinsic property of the target workspace. Allowing it to be passed independently meant a user could specify a region that didn't match their workspace, producing confusing failures downstream. The parameter was already marked deprecated and scheduled for removal.

Changes

• Removed --location / -l from az quantum job command definitions and from the underlying operations/job.py functions.
• Updated help text, examples, and the README to drop references to --location.
• Submission code no longer mutates the caller's input_params dict; a local copy is used when defaults need to be injected.
• Bumped extension version in setup.py; added entry to HISTORY.rst.

Testing

• All unit tests in src/quantum/azext_quantum/tests/latest pass locally (pytest).
• Live test_jobs exercised against a personal Azure Quantum workspace via AZURE_QUANTUM_* env vars; submit / list / show / cancel succeed without --location.
• The remaining live-test failures observed locally (test_submit*, test_workspace_create_destroy, test_workspace_keys, test_get_provider, test_workspace, test_targets) are pre-existing and unrelated to this change:
  • AttributeError: 'QuantumWorkspace' object has no attribute 'providers' — SDK drift in operations/workspace.py (the regenerated SDK moved providers onto workspace.properties.providers).
  • The others depend on a Microsoft-internal e2e workspace (e2e-scenarios/qw-e2e-tests-eus) hard-coded in tests/latest/utils.py that isn't accessible from a personal subscription.
    Both reproduce on main.

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[yonzhan]

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