[7.10] [DOCS] Remove index mgmt docs (#82099)#82167

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jrodewig merged 1 commit intoelastic:7.10from jrodewig:backport/7.10/pr-82099

Oct 30, 2020

+7-269

Commits on Oct 30, 2020

[DOCS] Remove index mgmt docs (#82099 )
jrodewig
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