package/atop: bump to version 2.4.0

Drop patch 0001 as it was applied upstream [1].
This new version uses PERF_FLAG_FD_CLOEXEC therefore it needs a
toolchain with headers >= 3.14.

[1] https://github.com/Atoptool/atop/commit/414127c03669b4eedc85778a7bff80cf601311d8



Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>