Revert "Require name and summary for validate-relax"
Revert "Require name and summary for validate-relax"

This made it too strict and started incorrectly failing apps that don't
have <summary> set in the appdata file and fall back to Comment in the
desktop file.

This reverts commit 57e1575ebcf2c041071f32c2e79098c3f07c8987.

hughsie/appstream-glib,hughsie/appstream-glib,ximion/appstream-glib,ximion/appstream-glib,hughsie/appstream-glib,ximion/appstream-glib