go: Fix build for Linuxbrew
go: Fix build for Linuxbrew

Set the executable bit for the .elf files in the test folder.
Remove devel block which has been removed upstream

Closes Linuxbrew/homebrew-core#3996.

Signed-off-by: Michka Popoff <7b0496f66f66ee22a38826c310c38b415671b832@gmail.com>

Linuxbrew/homebrew-core,maxim-belkin/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,rwhogg/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core