This reverts the solution in 9fee132c.

Also, calculate center using the new function for chart, image, and text
shape insertion.

Change-Id: Ie893050b7c875760db0194e7a3f0c2cd3068963b
Reviewed-on: https://gerrit.libreoffice.org/51343Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: pranavk <pranavk@collabora.co.uk>