[REFACTOR][TEST] Remove unused te imports from test files

[tqchen]

This PR removes unused from tvm import te imports from 25 test files across the codebase, continuing the ongoing TE → TVMScript migration cleanup.

Changes:

• Remove unused from tvm import te from 24 test files in tir-transform/, s_tir/transform/, codegen/, arith/, all-platform-minimal-test/, and testing/
• Replace te.var("x") with tvm.tir.Var("x", "int32") in test_s_tir_transform_decorate_device_scope.py (the only file where te was actually used)
• Clean up stale tvm.tir.ir_builder comment references in test_tir_transform_convert_ssa.py

[gemini-code-assist]

Summary of Changes

Hello @tqchen, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request continues the effort to migrate away from the te (Tensor Expression) module towards TVMScript. The primary goal is to streamline the codebase by removing unused imports and updating deprecated API calls in test files. This cleanup improves code clarity and reduces potential confusion by ensuring that only necessary modules are imported and current API standards are followed.

Highlights

• Unused Import Removal: Removed from tvm import te imports from 24 test files across various directories (tir-transform/, s_tir/transform/, codegen/, arith/, all-platform-minimal-test/, and testing/) as part of the ongoing TE → TVMScript migration cleanup.
• API Migration: Replaced the deprecated te.var("x") with tvm.tir.Var("x", "int32") in test_s_tir_transform_decorate_device_scope.py, addressing the only instance where te was actively used in the affected files.
• Comment Cleanup: Cleaned up stale tvm.tir.ir_builder comment references in test_tir_transform_convert_ssa.py to reflect current practices.

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Changelog

• tests/python/all-platform-minimal-test/test_runtime_ndarray.py
  • Removed unused from tvm import te import.
• tests/python/all-platform-minimal-test/test_runtime_packed_func.py
  • Removed unused from tvm import te import.
• tests/python/arith/test_arith_domain_touched.py
  • Removed unused from tvm import te import.
• tests/python/codegen/test_target_codegen_llvm_vla.py
  • Removed unused from tvm import te import.
• tests/python/codegen/test_target_codegen_static_init.py
  • Removed unused from tvm import te import.
• tests/python/s_tir/transform/test_s_tir_transform_compact_buffer_region.py
  • Removed unused from tvm import te import.
• tests/python/s_tir/transform/test_s_tir_transform_decorate_device_scope.py
  • Removed unused from tvm import te import.
  • Replaced te.var("x") with tvm.tir.Var("x", "int32").
• tests/python/s_tir/transform/test_s_tir_transform_hoist_if.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_loop_partition.py
  • Removed unused from tvm import te import.
• tests/python/s_tir/transform/test_s_tir_transform_lower_cross_thread_reduction.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_lower_init_block.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_lower_opaque_block.py
  • Removed unused from tvm import te import.
• tests/python/s_tir/transform/test_s_tir_transform_memhammer_lower_auto_copy.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_merge_dynamic_shared_memory_allocations.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_plan_update_buffer_allocation_location.py
  • Removed unused from tvm import te import.
• tests/python/s_tir/transform/test_s_tir_transform_profiling_instr.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_thread_sync.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/s_tir/transform/test_s_tir_transform_unify_thread_binding.py
  • Modified from tvm import te, s_tir to from tvm import s_tir.
• tests/python/testing/test_testing.py
  • Removed unused from tvm import te import.
• tests/python/tir-transform/test_tir_transform_convert_ssa.py
  • Updated comments to remove references to tvm.tir.ir_builder.
• tests/python/tir-transform/test_tir_transform_flatten_buffer.py
  • Removed unused from tvm import te import.
• tests/python/tir-transform/test_tir_transform_make_packed_api.py
  • Modified from tvm import te, tir to from tvm import tir.
• tests/python/tir-transform/test_tir_transform_narrow_datatype.py
  • Removed unused from tvm import te import.
• tests/python/tir-transform/test_tir_transform_split_host_device.py
  • Removed unused from tvm import te import.
• tests/python/tir-transform/test_tir_transform_storage_rewrite.py
  • Removed unused from tvm import te import.

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[gemini-code-assist]

Code Review

This pull request is a refactoring that removes unused from tvm import te imports from 25 test files, as part of the ongoing migration from Tensor Expressions (TE) to TVMScript. The changes primarily involve deleting unused import statements. Additionally, a call to te.var has been correctly replaced with its tvm.tir.Var equivalent, and a stale comment has been updated. The changes are straightforward, correct, and contribute to improving the codebase's cleanliness. I have reviewed the pull request and found no issues.

[Ubospica]

LGTM