#i114728# remove the unused gb_Library_add_ldflags helper

when the alternative is between
- adding an add_ldflags helper and providing extensive docs about it and all other related gbuild macros
- just using the already existing set_ldflags macro
then that choice is easy...


git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1556774 13f79535-47bb-0310-9956-ffa450edef68