qt-in-use-common.inc: Remove TinyLogin package from QT image demos

TinyLogin has been deprecated according to the below link, so removing
it from the QT images.

http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/meta?id=c31537a06293cb86e3087736a152fa7b81b5c7ba

Change-Id: I51bde76d842cb5af613b8685ddceafca0024642b
Signed-off-by: Leonardo Sandoval <leo.san.gon@gmail.com>