Remove *_DISABLE_SINGLE_INCLUDES macros.
Remove *_DISABLE_SINGLE_INCLUDES macros.

We already comply, and it's required now anyway for gtk3.

tintou/evolution-data-server,Distrotech/evolution-data-server,gcampax/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,gcampax/evolution-data-server,gcampax/evolution-data-server,gcampax/evolution-data-server