remove connection reference in bulk.js
remove connection reference in bulk.js

kimchouard/jsforce,jsforce/jsforce,nutthawan/jsforce,parthiban019/jsforce,nutthawan/jsforce,parthiban019/jsforce,saleswise/jsforce,rdietrick/jsforce,bhaskarmelkani/jsforce,joeferraro/jsforce,pcon/jsforce,joeferraro/jsforce,jsforce/jsforce,jesperkristensen/jsforce,pcon/jsforce,saleswise/jsforce,lkatney/jsforce,saleswise/jsforce,bhaskarmelkani/jsforce,pcon/jsforce,jdcrensh/jsforce,jesperkristensen/jsforce,jsforce/jsforce,jdcrensh/jsforce,lkatney/jsforce