Bug#981848: Go devel package should be arch:all

[Shengjing Zhu]

Source: golang-github-mozillazg-go-pinyin
Severity: normal
X-Debbugs-Cc: z...@debian.org

golang-*-dev packages on every architecture has same content.
If you want tests on every architecture, it can be achieved by
autopkgtest-pkg-go and debci infra.