Revert "tests: Run tests in an anon function to catch global variables"
Revert "tests: Run tests in an anon function to catch global variables"

This reverts commit ba2d8fcf7642edf0873105e8d7fdd957438e6972.

Breaks 4.3.12 and .11

zsh-users/zsh-syntax-highlighting,phy1729/zsh-syntax-highlighting,zsh-users/zsh-syntax-highlighting,phy1729/zsh-syntax-highlighting,joshuarubin/dotfiles,joshuarubin/dotfiles,P71/zsh-syntax-highlighting,x-way/zsh-syntax-highlighting,stuha/wbr-zsh,P71/zsh-syntax-highlighting,x-way/zsh-syntax-highlighting,joshuarubin/dotfiles,joshuarubin/dotfiles