[CMAKE] Remove unused Libbacktrace.cmake

[tqchen]

Summary

Remove legacy cmake/libs/Libbacktrace.cmake which is no longer used.
Libbacktrace is now built through tvm-ffi's own cmake infrastructure.

[gemini-code-assist]

Summary of Changes

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This pull request focuses on cleaning up the build system by removing an obsolete CMake configuration file. The Libbacktrace.cmake file, previously responsible for building the libbacktrace library, has been deprecated because the library's build process has been successfully migrated to tvm-ffi's internal CMake setup. This change simplifies the project's build configuration and removes redundant code.

Highlights

• Code Removal: Removed the legacy cmake/libs/Libbacktrace.cmake file, as it is no longer utilized in the build process.
• Build System Update: The libbacktrace library is now built using tvm-ffi's dedicated CMake infrastructure, streamlining its integration.

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Changelog

• cmake/libs/Libbacktrace.cmake
  • Removed the file as it is no longer used for building libbacktrace.

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[gemini-code-assist]

Code Review

This pull request removes the cmake/libs/Libbacktrace.cmake file, which is described as legacy and unused. The rationale is that libbacktrace is now built through the tvm-ffi infrastructure. My review of the provided CMakeLists.txt confirms there are no references to the deleted file, supporting the claim that it is obsolete. This change represents a good cleanup of the build configuration.