Revert "QmlDesigner: Install the puppet to qt for debug"

Breaks compilation on linux for non-privileged users.

This reverts commit 4d7c17fcf6e577ada426e83d29b8900bb28d283e

Change-Id: I24e1912c852d8c6105f73f526cadbaea131911d1
Reviewed-by: Marco Bubke <marco.bubke@digia.com>