Drop rewriting in date_histogram (backport of #57836) #58875
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The `date_histogram` aggregation had an optimization where it'd rewrite `time_zones` who's offset from UTC is fixed across the entire index. This rewrite is no longer needed after elastic#56371 because we can tell that a time zone is fixed lower down in the aggregation. So this removes it.
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The
date_histogramaggregation had an optimization where it'd rewritetime_zoneswho's offset from UTC is fixed across the entire index.This rewrite is no longer needed after #56371 because we can tell that a
time zone is fixed lower down in the aggregation. So this removes it.