This reverts commit 7aa9b9041d.
libbluray before 1.3.0 does not properly detect libudfread, because it
checks for the incorrect name (it asks pkg-config for udfread instead of
libudfread). So, even with the dependency, it would miss it.
Reported-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>