remove checklib dependency from unit tests

[dschwoerer]

This triggers unneeded rebuilds. It is not used anywhere else.

Should this go to master instead?

[ZedThree]

It's also used here:

BOUT-dev/make.config.in

Line 293 in 38eae3c

$(SOURCEC): checklib

CHANGED is:

BOUT-dev/make.config.in

Line 98 in 38eae3c

CHANGED = $(shell find -f $(BOUT_TOP)/include $(BOUT_TOP)/src -type f \( -name \*.cxx -or -name \*.h \) -newer $(LIB) -print 2> /dev/null)

That should be .hxx not .h 🤦‍♂️

[dschwoerer]

I noticed the .h as well. But it doesn't work anyway if only the hxx are changed, it doesn't trigger a rebuild of affected files. Should I remove it?

That is why the physics model is always rebuild -.-
Are you happy with removing that as well, or is that to confusing for physics model?
If so, I think it should be a separate PR / this PR should be renamed so that it ends up in the changelog.