De-duplicate alphadecays.txt #8286

Job	Run time
classicmode_1d_3dgrid	4m 21s
classicmode_3d	7m 48s
kilonova_1d_1dgrid	4m 49s
kilonova_1d_3dgrid	4m 59s
kilonova_2d_2dgrid	6m 58s
kilonova_2d_2dgrid_barnesthermalisation	5m 27s
kilonova_2d_2dgrid_expansionopac	4m 56s
kilonova_2d_2dgrid_xcomgammaphotoion	5m 25s
kilonova_2d_3dgrid	7m 41s
nebular_1d_3dgrid	11m 49s
nebular_1d_3dgrid_limitbfest	14m 47s
combine_checksums	24s
	1h 19m 24s

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