Remove <div id="buddypress"> wrappers from members/single/settings/ templates

The #buddypress div is added in the top-level template. It appears to have been
copied here by mistake when bp-legacy was first spawned from bp-default.

Fixes #5045

Props hnla

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7199 cdf35c40-ae34-48e0-9cc9-0c9da1808c22