Remove functions for preparing committee responses for display

instead, payload objects are available through $jsonUtil.
Reference https://github.com/the-fascinator/the-fascinator/commit/b2ca31a2cddc708cca9d5bb8c69ebb79f2d4f101
ARMS-65 Display committee repsonses in PDF

PDFtransformer can get payload in storage to display committee responses in reviewer's PDF