Fix an autoconf warning
Fix an autoconf warning

the pass1Only test has been migrated from C to YAML, so
pass1Only_SOURCES is no longer needed in Makefile.am

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