libsoup: remove unnecessary gobject-introspection from buildInputs

Since #200337, it is propagated from nativeBuildInputs.

-1
-1
pkgs/development/libraries/libsoup/default.nix
··· 42 ]; 43 44 buildInputs = [ 45 - gobject-introspection 46 sqlite 47 libpsl 48 glib.out
··· 42 ]; 43 44 buildInputs = [ 45 sqlite 46 libpsl 47 glib.out