Remove rust-server-deprecated samples, workflow tests

[wing328]

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Summary by cubic

Remove all rust-server-deprecated samples and stop running their CI tests. This reduces maintenance and speeds up the samples workflow.

• Refactors
  • Deleted bin/configs/rust-server-deprecated-*.yaml and the entire samples/server/petstore/rust-server-deprecated directory.
  • Updated .github/workflows/samples-rust-server.yaml to remove rust-server-deprecated from the matrix.

^{Written for commit 56cf7d4. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 306 files

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