Revert "xz: patch for CentOS 5 for Linuxbrew"
Revert "xz: patch for CentOS 5 for Linuxbrew"

This reverts commit da8c1109853d9d03f503ac0effe955a8272bc860.

This patch is no longer necessary with xz 5.2.2.

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