cpp.cc: cpp_generator::print_public_constructors_impl: drop redundant argument
cpp.cc: cpp_generator::print_public_constructors_impl: drop redundant argument

The redundant argument to the osprintf call was introduced in
isl-0.18-599-g7d3c260fb5 (cpp: support methods and constructors,
Thu Apr 13 21:42:03 2017 +0200).

Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

nicolasvasilache/isl,PollyLabs/isl,inducer/isl-mirror,Meinersbur/isl,nicolasvasilache/isl,inducer/isl-mirror,nicolasvasilache/isl,PollyLabs/isl,Meinersbur/isl,PollyLabs/isl,Meinersbur/isl,Meinersbur/isl,nicolasvasilache/isl,PollyLabs/isl,inducer/isl-mirror,PollyLabs/isl,inducer/isl-mirror,inducer/isl-mirror,nicolasvasilache/isl