build: Drop check for libvaladoc
build: Drop check for libvaladoc

We don’t use the library, we just use the valadoc binary, so there’s no
point in checking for the library. It means our build keeps breaking
whenever libvaladoc changes the naming of its .pc file (which happens
once each stable release cycle).

Signed-off-by: Philip Withnall <29c2a2ac2a854b9cf047275aa9de346d096be2e0@endlessm.com>

pwithnall/folks,pwithnall/folks,GNOME/folks,GNOME/folks,GNOME/folks,pwithnall/folks