Sergey Biryukov 8ff7595ae9 Permalinks: Don't show "You should update your .htaccess file now" message when saving permalink settings on Multisite.
Multisite routing is taken care of by WordPress, not by the web server.

Follow-up to [13706], [37747], [38066].

Props boonebgorges.
Fixes #39547.
Built from https://develop.svn.wordpress.org/trunk@48713


git-svn-id: http://core.svn.wordpress.org/trunk@48475 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2020-08-02 12:57:08 +00:00
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