test(cuda.bindings): drop cython warning cleanliness tests

Address review feedback: warning_errors in build_hooks already
guards against Cython warning regressions, so the source-level
tests add unnecessary maintenance cost.

Signed-off-by: Omar Atie <atiaomar1978-hub@users.noreply.github.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: atiaomar1978-hub