Eliminate 3 On The Tree

My 74 Dart Sport began life with a 198 and a column 3 spd manual.

It now has a 360, 727.

I removed the shift lever, and I don't care if the column sleeve and the linkage down on the engine side of the firewall stay there.

But, how do I remove the "feature" that locks the column when the 3 speeder is in reverse? If I remove the steering wheel, will I see something obvious that needs to be removed?

I don't want to click it off while moving and have it go all the way to "lock".