Revert "show/hide pager when there is many/1 desktops"

Fixes bug where setting VD's == 1 results in an invisible, still there,
still taking up space applet with no ability to get to applet settings
or even remove it.

Only way to get it back would be going into Virtual Desktop kcm and
upping the count.

The behavior with that commit ends up creating what seems like a bug.

I'm sure it sounded good in theory, but in practice it ends up being
confusing and bug-like.

BUG:283874
CCMAIL:aseigo@.kde.org

This reverts commit c92ccc4d.
(cherry picked from commit 9bee3f3f)

One of these days I'll be good at git ;p