Delete all deprecated traits, functions, etc.

[jan-ferdinand]

• Convert all implementions of DeprecatedSnippet to BasicSnippet
• Remove trait DeprecatedSnippet
• Remove all functions containing “deprecated” in their name, for example (list non-exhaustive):
  • fn execute_bench_deprecated()
  • fn benchmark_snippet_deprecated()
  • fn test_rust_equivalence_multiple_deprecated()
  • fn test_rust_equivalence_given_execution_state_deprecated()
  • …