deleted checkpoints folder

...nton_Semtner_lores_comparison_PAPERPLOTS-checkpoint.ipynb

...nb_checkpoints/Winton_artificial_forcing-checkpoint.ipynb

...eckpoints/bifurcation_Semtner_unlim-lim5-checkpoint.ipynb

...kpoints/bifurcation_Winton_Semtner_unlim-checkpoint.ipynb

.ipynb_checkpoints/cdo_pp-checkpoint.ipynb

...eckpoints/energyflux_icelimit_comparison-checkpoint.ipynb

.ipynb_checkpoints/overview-checkpoint.ipynb

...aper_5000_and_3000ppmv_and_1500ppmv_plot-checkpoint.ipynb