btf: ungate libbpf feature-detection fix for all android12-5.10
Drop the sublevel>43 gate from the 0001 patch step only. That step removes
the elfdep feature-detection gate from tools/lib/bpf/Makefile; sublevel-43
(2021-10) trees hit 'elfdep: No libelf found' because the patch never ran.
Other five btf steps keep their gate.