removed workaround for cmake versions prior to 2.8.10
removed workaround for cmake versions prior to 2.8.10

alabuzhev/fmt,alabuzhev/fmt,alabuzhev/fmt,lightslife/cppformat,cppformat/cppformat,mojoBrendan/fmt,mojoBrendan/fmt,dean0x7d/cppformat,lightslife/cppformat,cppformat/cppformat,lightslife/cppformat,dean0x7d/cppformat,mojoBrendan/fmt,cppformat/cppformat,dean0x7d/cppformat