Almost the entire set of equine and equine-related industries, within 15 years of the widespread acceptance of the automobile.
The entire ice industry, in about 10 years between 1935 and 1945, when the refrigerator became a common household appliance.
Making something more efficient to do != the removal of it's need entirely. People still needed a way to transport goods/people and they use ice. This would be relevant if Star Trek transporters were developed and sold for under the cost of the average vehicle (and you ignored the moral ramifications of transporting people). Both options also had ample time for merely coping with new technology (10-15 years as you posted).
But that's still different than one day coming in to work as a police dispatcher and the phone does not ring. Your job and entire industry is literally gone overnight.
Almost every military at the end of a major war.
World War II had millions of draftees: people whose primary occupation was not
soldiering. When they got home, they expected to go back to their average job.
I do like how in your explanation of the large number of people left unemployed by eliminating crime, you feel the necessity of including civil law, war, and the prevention and adjudication of accidents, rather than the prevention of crimes, right after I make fun of you for assuming that if God stops crime he has to solve all problems for everyone.
First off: get your fucking quotes straight before talking shit. Second: read the OP where it says "war" and "injustice." While injustice is a subjective concept, I would assume this means Mr. Helpful will handle disputes in the civil system or just make them moot by messing with people's brains so they wouldn't think about faking an injury in a car wreck (to just name one example).
Also, if you think there's no actual crime in the civil court system.... then wow.