remove stats logging code from compiler.rs
remove stats logging code from compiler.rs

Reviewed By: jstejada

Differential Revision: D20103791

fbshipit-source-id: 212e59acf8e278f1463840f42655f0baee1628c4

facebook/relay,facebook/relay,facebook/relay,facebook/relay,josephsavona/relay,yungsters/relay,xuorig/relay,xuorig/relay,wincent/relay,kassens/relay,wincent/relay,atxwebs/relay,iamchenxin/relay,yungsters/relay,voideanvalue/relay,wincent/relay,facebook/relay,xuorig/relay,kassens/relay,yungsters/relay,kassens/relay,cpojer/relay,atxwebs/relay,wincent/relay,xuorig/relay,iamchenxin/relay,wincent/relay,cpojer/relay,iamchenxin/relay,cpojer/relay,josephsavona/relay,iamchenxin/relay,atxwebs/relay,xuorig/relay,josephsavona/relay,voideanvalue/relay,wincent/relay,facebook/relay,cpojer/relay,atxwebs/relay,kassens/relay,voideanvalue/relay,xuorig/relay,voideanvalue/relay,kassens/relay,voideanvalue/relay,voideanvalue/relay,kassens/relay