Revert "Merge pull request #66 from reza-arjmandi/solve_problem_day2"
Revert "Merge pull request #66 from reza-arjmandi/solve_problem_day2"

This reverts commit eaf601db11fd43c1600de9e740e55eb35202515e, reversing
changes made to f6544d2cca1bc5f2b896db9d657605695dcc07a5.

reza-arjmandi/rpi-course,reza-arjmandi/rpi-course,reza-arjmandi/rpi-course,reza-arjmandi/rpi-course