Update gammapkt.cc #7309

Job	Run time
classicmode_1d_3dgrid	4m 51s
classicmode_3d	8m 0s
kilonova_1d_1dgrid	4m 37s
kilonova_1d_3dgrid	4m 54s
kilonova_2d_2dgrid	6m 45s
kilonova_2d_2dgrid_barnesthermalisation	5m 22s
kilonova_2d_2dgrid_expansionopac	5m 16s
kilonova_2d_2dgrid_xcomgammaphotoion	5m 33s
kilonova_2d_3dgrid	6m 52s
nebular_1d_3dgrid	12m 16s
nebular_1d_3dgrid_limitbfest	14m 1s
classicmode_1d_3dgrid testmode ON	15m 24s
classicmode_3d testmode ON	23m 29s
kilonova_1d_1dgrid testmode ON	10m 40s
kilonova_1d_3dgrid testmode ON	11m 20s
kilonova_2d_2dgrid testmode ON	19m 2s
kilonova_2d_2dgrid_barnesthermalisation testmode ON	16m 39s
kilonova_2d_2dgrid_expansionopac testmode ON	15m 2s
kilonova_2d_2dgrid_xcomgammaphotoion testmode ON	15m 24s
kilonova_2d_3dgrid testmode ON	19m 44s
nebular_1d_3dgrid testmode ON	25m 18s
nebular_1d_3dgrid_limitbfest testmode ON	28m 21s
combine_checksums	23s
	4h 39m 13s

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