Makefile: Drop vndr whitelist
Makefile: Drop vndr whitelist

Since autocompletions moved to contrib/ in
https://github.com/containerd/containerd/pull/3766

Signed-off-by: Manuel Rüger <adc16fa41a38b174232f206e0b2bd006baaace68@rueg.eu>

dmcgowan/containerd,vdemeester/containerd,thaJeztah/containerd,containerd/containerd,crosbymichael/containerd,crosbymichael/containerd,estesp/containerd,mikebrow/containerd,mikebrow/containerd,thaJeztah/containerd,containerd/containerd,dmcgowan/containerd,vdemeester/containerd,estesp/containerd