Revert "gatomic: statically assert that our assumptions hold"
Revert "gatomic: statically assert that our assumptions hold"

This reverts commit 7269d75321b9d2a967a59fb35f243397f577eb41.

Adding G_STATIC_ASSERT() into a header file caused compilation
problems with at least one app (Anjuta). Reverting to keep
GNOME continuous testing running.

https://bugzilla.gnome.org/show_bug.cgi?id=730932

ieei/glib,johne53/MB3Glib,tchakabam/glib,Distrotech/glib,lukasz-skalski/glib,johne53/MB3Glib,tamaskenez/glib,gale320/glib,ieei/glib,cention-sany/glib,lukasz-skalski/glib,MathieuDuponchelle/glib,Distrotech/glib,gale320/glib,mzabaluev/glib,cention-sany/glib,tchakabam/glib,krichter722/glib,gale320/glib,krichter722/glib,tamaskenez/glib,ieei/glib,cention-sany/glib,krichter722/glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,Distrotech/glib,MathieuDuponchelle/glib,cention-sany/glib,tamaskenez/glib,tchakabam/glib,tamaskenez/glib,lukasz-skalski/glib,cention-sany/glib,endlessm/glib,tamaskenez/glib,Distrotech/glib,johne53/MB3Glib,endlessm/glib,MathieuDuponchelle/glib,johne53/MB3Glib,tchakabam/glib,MathieuDuponchelle/glib,MathieuDuponchelle/glib,krichter722/glib,gale320/glib,tchakabam/glib,mzabaluev/glib,johne53/MB3Glib,Distrotech/glib,mzabaluev/glib,gale320/glib,endlessm/glib,ieei/glib,lukasz-skalski/glib,lukasz-skalski/glib,mzabaluev/glib,krichter722/glib,ieei/glib,mzabaluev/glib