Revert "checks if func is irregular -> add old generation back after survivor selection. "

This reverts commit 5a8e65a6a22cb3737d51b2071d938f78fe4acf35.
State as of 9/9 19:44 
Score: 
function1 0.7377455826226342
function2 0.02500366581518021
function3 6.796286950684296