[7.x] Revert "[Search] Search batching using bfetch (#83418)" (#84037)#84038

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mistic merged 1 commit intoelastic:7.xfrom mistic:backport/7.x/pr-84037

Nov 23, 2020

+81-414

Commits on Nov 23, 2020

Revert "[Search] Search batching using bfetch (elastic#83418 )" (elastic#84037 )
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