Revert "code_checks fix by moving UnplacedBox"

This reverts commit 8940f81b
4 jobs for gsoc in 5 minutes and 58 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Build
passed clang-format #9763689

00:01:04

failed code_checks #9763690

00:00:54

passed with_NAVINDEX #9763692
cvmfs

00:05:58

passed with_ROOT #9763691
cvmfs

00:05:37

 
Name Stage Failure
failed
code_checks Build
CMakeFiles/vecgeom.dir/build.make:62: recipe for target 'CMakeFiles/vecgeom.dir/source/UnplacedPolycone.cpp.o' failed
make[2]: *** [CMakeFiles/vecgeom.dir/source/UnplacedPolycone.cpp.o] Error 1
make[2]: Leaving directory '/builds/anmihail/VecGeom/build'
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/vecgeom.dir/all' failed
make[1]: *** [CMakeFiles/vecgeom.dir/all] Error 2
make[1]: Leaving directory '/builds/anmihail/VecGeom/build'
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
ERROR: Job failed: exit code 2