As Quentin and Andrri said [0], bpftool gen object strips
out DWARF already, so remove the repeat operation.
[0] https://github.com/libbpf/bpftool/issues/161
Suggested-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Suggested-by: Quentin Monnet <qmo@xxxxxxxxxx>
Signed-off-by: Tao Chen <chen.dylane@xxxxxxxxx>