Remove CMAKE_BUILD_TYPE
Remove CMAKE_BUILD_TYPE

After we have made a default build type Release in da92c1b
we don't need to set this variable on command line anymore.

OpenSCAP/openscap,jan-cerny/openscap,jan-cerny/openscap,OpenSCAP/openscap,mpreisler/openscap,mpreisler/openscap,redhatrises/openscap,redhatrises/openscap,OpenSCAP/openscap,jan-cerny/openscap,jan-cerny/openscap,mpreisler/openscap,mpreisler/openscap,redhatrises/openscap,mpreisler/openscap,redhatrises/openscap,OpenSCAP/openscap,redhatrises/openscap,OpenSCAP/openscap,redhatrises/openscap,jan-cerny/openscap,jan-cerny/openscap,OpenSCAP/openscap,mpreisler/openscap