remove unused index.js
remove unused index.js

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