Revert "try triggering GC after every PF iteration"
Revert "try triggering GC after every PF iteration"

This reverts commit 98c58a929882611040ada0c959551a4885938339.

BayesianLogic/blog,BayesianLogic/blog,BayesianLogic/blog,BayesianLogic/blog,BayesianLogic/blog