Removed unused variables and outdated comments
Removed unused variables and outdated comments

matt9mg/concrete5,matt9mg/concrete5,TimDix/concrete5,matt9mg/concrete5,TimDix/concrete5,avdevs/concrete5,avdevs/concrete5,MichaelMaar/concrete5,MichaelMaar/concrete5,MichaelMaar/concrete5,avdevs/concrete5,TimDix/concrete5