[pkg-go] govendor is marked for autoremoval from testing

[Debian testing autoremoval watch]

govendor 1.0.8+ds1-1 is marked for autoremoval from testing on 2017-04-20

It (build-)depends on packages with these RC bugs:
857024: golang-golang-x-tools: golang-golang-x-tools FRBFS on mips: unexpected fault address 0x56d03680
857025: golang-golang-x-tools: golang-golang-x-tools FRBFS on armhf: golang.org/x/tools/refactor/satisfy [no test files]