package/libnpth: disable tests

tests are enabled by default since the addition of the package in commit
5d74d39cb421611e7be8ee73a308d608c47cfa28

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed