libbpf-tools/opensnoop: remove unused variable and macro
libbpf-tools/opensnoop: remove unused variable and macro

The variable min_us and macro TASK_RUNNING are not used, remove them.

Signed-off-by: Yuntao Wang <1a63932470261ed8b3a661c70353041543762fb4@gmail.com>

iovisor/bcc,iovisor/bcc,iovisor/bcc,iovisor/bcc,iovisor/bcc