Revert "add core/thread header to Process.cpp to eliminate warnings"
Revert "add core/thread header to Process.cpp to eliminate warnings"

This reverts commit 70b581232ecb82dae3df60ee577bda796eb06ace.

thklaus/rstudio,jar1karp/rstudio,jrnold/rstudio,edrogers/rstudio,brsimioni/rstudio,vbelakov/rstudio,jzhu8803/rstudio,jzhu8803/rstudio,sfloresm/rstudio,edrogers/rstudio,githubfun/rstudio,jzhu8803/rstudio,sfloresm/rstudio,sfloresm/rstudio,nvoron23/rstudio,piersharding/rstudio,brsimioni/rstudio,vbelakov/rstudio,githubfun/rstudio,githubfun/rstudio,pssguy/rstudio,piersharding/rstudio,Sage-Bionetworks/rstudio,brsimioni/rstudio,sfloresm/rstudio,more1/rstudio,edrogers/rstudio,piersharding/rstudio,tbarrongh/rstudio,suribes/rstudio,thklaus/rstudio,vbelakov/rstudio,jrnold/rstudio,jrnold/rstudio,jzhu8803/rstudio,more1/rstudio,githubfun/rstudio,nvoron23/rstudio,suribes/rstudio,tbarrongh/rstudio,JanMarvin/rstudio,sfloresm/rstudio,jzhu8803/rstudio,edrogers/rstudio,jrnold/rstudio,maligulzar/Rstudio-instrumented,suribes/rstudio,nvoron23/rstudio,nvoron23/rstudio,JanMarvin/rstudio,piersharding/rstudio,nvoron23/rstudio,vbelakov/rstudio,pssguy/rstudio,githubfun/rstudio,vbelakov/rstudio,brsimioni/rstudio,edrogers/rstudio,maligulzar/Rstudio-instrumented,thklaus/rstudio,tbarrongh/rstudio,jrnold/rstudio,pssguy/rstudio,pssguy/rstudio,brsimioni/rstudio,john-r-mcpherson/rstudio,thklaus/rstudio,jar1karp/rstudio,jar1karp/rstudio,JanMarvin/rstudio,piersharding/rstudio,edrogers/rstudio,jar1karp/rstudio,piersharding/rstudio,pssguy/rstudio,edrogers/rstudio,githubfun/rstudio,pssguy/rstudio,Sage-Bionetworks/rstudio,maligulzar/Rstudio-instrumented,more1/rstudio,jrnold/rstudio,more1/rstudio,jar1karp/rstudio,more1/rstudio,githubfun/rstudio,JanMarvin/rstudio,maligulzar/Rstudio-instrumented,jrnold/rstudio,vbelakov/rstudio,vbelakov/rstudio,more1/rstudio,Sage-Bionetworks/rstudio,more1/rstudio,suribes/rstudio,piersharding/rstudio,suribes/rstudio,john-r-mcpherson/rstudio,john-r-mcpherson/rstudio,maligulzar/Rstudio-instrumented,jar1karp/rstudio,jzhu8803/rstudio,sfloresm/rstudio,tbarrongh/rstudio,brsimioni/rstudio,brsimioni/rstudio,brsimioni/rstudio,john-r-mcpherson/rstudio,thklaus/rstudio,jzhu8803/rstudio,john-r-mcpherson/rstudio,maligulzar/Rstudio-instrumented,edrogers/rstudio,thklaus/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,tbarrongh/rstudio,githubfun/rstudio,john-r-mcpherson/rstudio,piersharding/rstudio,JanMarvin/rstudio,suribes/rstudio,nvoron23/rstudio,Sage-Bionetworks/rstudio,thklaus/rstudio,sfloresm/rstudio,JanMarvin/rstudio,jar1karp/rstudio,pssguy/rstudio,nvoron23/rstudio,Sage-Bionetworks/rstudio,jar1karp/rstudio,jzhu8803/rstudio,jrnold/rstudio,tbarrongh/rstudio,john-r-mcpherson/rstudio,sfloresm/rstudio,pssguy/rstudio,maligulzar/Rstudio-instrumented,vbelakov/rstudio,thklaus/rstudio,piersharding/rstudio,tbarrongh/rstudio,maligulzar/Rstudio-instrumented,Sage-Bionetworks/rstudio,more1/rstudio,john-r-mcpherson/rstudio,Sage-Bionetworks/rstudio,suribes/rstudio,jrnold/rstudio,maligulzar/Rstudio-instrumented,tbarrongh/rstudio,JanMarvin/rstudio,jar1karp/rstudio,suribes/rstudio