Removes unecessary explicit ctor and operator=
Removes unecessary explicit ctor and operator=

tempbottle/cppitertools,tempbottle/cppitertools,jkhoogland/cppitertools,tempbottle/cppitertools,jkhoogland/cppitertools,jkhoogland/cppitertools,ryanhaining/cppitertools,ryanhaining/cppitertools,ryanhaining/cppitertools