selftests/bpf: Drop an unused local variable

Some copy/paste leftover, this is never used.

Fixes: e3d9eac99afd ("selftests/bpf: wq: add bpf_wq_init() checks")
Signed-off-by: Benjamin Tissoires <[e-mail]>
Signed-off-by: Daniel Borkmann <[e-mail]>
Acked-by: Kumar Kartikeya Dwivedi <[e-mail]>
Link: https://lore.kernel.org/bpf/[e-mail]

tools/testing/selftests/bpf/prog_tests/wq.c

···
 
 void serial_test_failures_wq(void)
 {
-	LIBBPF_OPTS(bpf_test_run_opts, topts);
-
 	RUN_TESTS(wq_failures);
 }