Remove libz.dylib from 'Link Binary with Libraries' build phase to remove XCode build warning
Remove libz.dylib from 'Link Binary with Libraries' build phase to remove XCode build warning

According to XCode's build warning, projects that build a static library should not link
directly against dynamic libraries.  Instead, their host projects should link against
their dynamic libraries.  In this case, projects that build ZipArchive as a dependency
should link against libz.dylib in their own 'Link Binary with Libraries' build phase.

saggymac/ZipArchive,rgregg/ZipArchive,640Labs/ZipArchive,studiomobile/ZipArchive,boxfish-project/ZipArchive,640Labs/ZipArchive,saggymac/ZipArchive,pebble8888/ZipArchive,studiomobile/ZipArchive,TechD-Robin/TDforkZipArchive,mattconnolly/ZipArchive,mattconnolly/ZipArchive,SongYuJie1989/-,Coeur/ZipArchive,rgregg/ZipArchive,pebble8888/ZipArchive,SongYuJie1989/-,TechD-Robin/TDforkZipArchive,Coeur/ZipArchive,boxfish-project/ZipArchive