small fix:

* change the DEBUG_flag to .false. before merge to master branch
3 jobs for dev_floatstep in 3 minutes and 52 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Build
passed build_ubuntu #69648
ci-ubuntu

00:01:40

passed build_x64 #69647
vind-pone-ci02

00:03:51

passed build_x86 #69646
vind-pone-ci02

00:03:40