Remove raft math.cuh and matrix.cuh

[aamijar]

Follow up to #7752. Remove two remaining headers that were supposed to be removed.

[coderabbitai]

📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Removed unused internal dependencies to optimize code maintainability and build configuration.

Walkthrough

Two include directives are removed from the SVD CUDA implementation file. The removed headers are for RAFT matrix utilities. No functional logic or control flow modifications are present in this change.

Changes

Cohort / File(s)	Summary
Header Cleanup cpp/src_prims/opg/linalg/svd.cu	Removed two unused include directives: <raft/matrix/math.cuh> and <raft/matrix/matrix.cuh>.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and accurately describes the primary change: removing two specific raft headers from the codebase.
Description check	✅ Passed	The description is related to the changeset, explaining this is a follow-up to remove headers that were intended to be removed in a previous PR.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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No actionable comments were generated in the recent review. 🎉

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[aamijar]

/merge