Remove tz offset from pgtsv_to_json for accuracy
Remove tz offset from pgtsv_to_json for accuracy

HazyResearch/deepdive,shahin/deepdive,shahin/deepdive,HazyResearch/deepdive,HazyResearch/deepdive,sky-xu/deepdive,sky-xu/deepdive,HazyResearch/deepdive