Revert "OS_VERSION fixed"
Revert "OS_VERSION fixed"

This reverts commit 3bd7bda1b4b45d51f0e2c7487e9206666e57afa2.

rwhogg/brew,rwhogg/brew,maxim-belkin/brew,hanxue/linuxbrew,rwhogg/brew,hanxue/linuxbrew,maxim-belkin/brew,Linuxbrew/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,Linuxbrew/brew