socket: removed unused macros
socket: removed unused macros

jagleeso/libmpdclient,cmende/libmpdclient,yusiwen/libmpdclient,sl0th/libmpdclient,yusiwen/libmpdclient,cmende/libmpdclient,jwise/libmpdclient,sl0th/libmpdclient,jagleeso/libmpdclient,jwise/libmpdclient,jagleeso/libmpdclient,psych0tik/libmpdclient2,psych0tik/libmpdclient2,jwise/libmpdclient,cmende/libmpdclient,yusiwen/libmpdclient,sl0th/libmpdclient