Makefile: Remove option to create archive.

Signed-off-by: Grzegorz Kowal <grzegorz@amuncode.org>

src/makefile

@@ -90,14 +90,10 @@ objects = blocks.o boundaries.o constants.o coordinates.o domains.o driver.o   \
           equations.o error.o evolution.o integrals.o interpolations.o io.o    \
           mesh.o mpitools.o operators.o parameters.o problems.o random.o       \
           refinement.o schemes.o shapes.o sources.o timers.o
-files   = $(sources) makefile make.default license.txt hosts
 
 $(name).x: $(objects)
 	$(LD) $(LDFLAGS) $(objects) $(LIBS) -o $(name).x
 
-arch: $(files)
-	tar czvf $(name)-$(DATE).tar.gz $(files)
-
 clean-bak:
 	rm -rf *.bak *~