[feature] consider to delete the support for "linux/arm/v6"

[ozbillwang]

refer https://github.com/docker-library/official-images#architectures-other-than-amd64

ARMv6 32-bit (arm32v6): https://hub.docker.com/u/arm32v6/

Do we need any images support 32-bit? That's mapped to docker platform name linux/arm/v6

[ozbillwang]

from 15th Oct, can't build image if base image is "node", so the build for semver image is failed.

related to this issue

nodejs/docker-node#1946 (comment)

remove semver temporarily from image list

e2df5be