package/ofono: remove double empty line in .mk file

Detected by check-package.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/ofono/ofono.mk

@@ -49,5 +49,4 @@ else
 OFONO_CONF_OPTS += --disable-bluetooth
 endif
 
-
 $(eval $(autotools-package))