remove code columns from microbiologyevents
remove code columns from microbiologyevents

fereshteh-razmi/mimic-code,MIT-LCP/mimic-code-sharing,MIT-LCP/mimic-code,fereshteh-razmi/mimic-code,MIT-LCP/mimic-code-sharing,fereshteh-razmi/mimic-code,MIT-LCP/mimic-code,MIT-LCP/mimic-code