Revert "Merge branch 'autopage-and-ldrize'"
autopagerize機能が既存機能（画面幅狭時の下部メニュー）と共存出来ないため削除

This reverts commit 128877551f24eefa991d7d3db8ba4e571cab9800, reversing
changes made to fb2cad073d5b02c98f124bbc94a25bc95cdfc580.