client/CMakeLists.txt: Remove boost_regex dependency
client/CMakeLists.txt: Remove boost_regex dependency

It looks like GCC 4.8.2 backported the <regex> implementation

anydream/NoLifeStory,KururuLABO/NoLifeStory,anydream/NoLifeStory,elwl/NoLifeStory,NoLifeDev/NoLifeStory