removes some unused stuff

examples/dummy_atmosphere.f90

mtime/src/mtime_timedelta.c

src/component.c

src/grid_unstruct.c

src/interp_grid.c

src/interp_method_file.c

src/interp_weights.c

src/intersection.c

src/proc_sphere_part.c

src/yac_finterface.f90

tests/test_couple_config_parallel1.c

tests/test_def_grid.f90

tests/test_def_points.f90

tests/test_dummy_coupling.f90

tests/test_grid.c

tests/test_interp_grid_parallel.c

tests/test_interp_method_avg_parallel.c

tests/test_interp_method_file_parallel.c

tests/test_interp_method_parallel.c

tests/test_interp_weights_parallel.c