Remove some unused vars
Remove some unused vars

Related to #22

BueVest/liblouis,liblouis/liblouis,hammera/liblouis,BueVest/liblouis,BueVest/liblouis,BueVest/liblouis,liblouis/liblouis,liblouis/liblouis,liblouis/liblouis,BueVest/liblouis,hammera/liblouis,hammera/liblouis,hammera/liblouis,BueVest/liblouis,hammera/liblouis,liblouis/liblouis,liblouis/liblouis,hammera/liblouis