Revert checker.py
Revert checker.py

randomshinichi/QRL,cyyber/QRL,elliottdehn/QRL,randomshinichi/QRL,elliottdehn/QRL,elliottdehn/QRL,jleni/QRL,elliottdehn/QRL,jleni/QRL,theQRL/QRL,cyyber/QRL,theQRL/QRL