ObjectChooser: remove deprecated parameters
ObjectChooser: remove deprecated parameters

The objectchooser had the 'title', 'flags' and 'buttons' parameters
deprecated for a long time, remove them now completely. The
only parameters allowed are now the 'parent' and the 'what_filter'.

Signed-off-by: Simon Schampijer <088e16a1019277b15d58faf0541e11910eb756f6@laptop.org>
Reviewed-by: Gonzalo Odiard <8e43bec6c9a4aba7dc358247a21ab52d301a2840@laptop.org>
Acked-by: Daniel Drake <83b0c3d63e8a11eb6e40077030b59e95bfe31ffa@laptop.org>

godiard/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,tchx84/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,gusDuarte/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,i5o/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3