Update gammapkt.cc #7266

Job	Run time
classicmode_1d_3dgrid	4m 48s
classicmode_3d	8m 16s
kilonova_1d_1dgrid	4m 52s
kilonova_1d_3dgrid	5m 6s
kilonova_2d_2dgrid	6m 56s
kilonova_2d_2dgrid_barnesthermalisation	5m 30s
kilonova_2d_2dgrid_expansionopac	5m 8s
kilonova_2d_2dgrid_xcomgammaphotoion	5m 33s
kilonova_2d_3dgrid	6m 51s
nebular_1d_3dgrid	11m 52s
nebular_1d_3dgrid_limitbfest	14m 23s
classicmode_1d_3dgrid testmode ON	15m 40s
classicmode_3d testmode ON	23m 43s
kilonova_1d_1dgrid testmode ON	10m 29s
kilonova_1d_3dgrid testmode ON	11m 4s
kilonova_2d_2dgrid testmode ON	18m 38s
kilonova_2d_2dgrid_barnesthermalisation testmode ON	16m 35s
kilonova_2d_2dgrid_expansionopac testmode ON	14m 55s
kilonova_2d_2dgrid_xcomgammaphotoion testmode ON	15m 25s
kilonova_2d_3dgrid testmode ON	19m 32s
nebular_1d_3dgrid testmode ON	25m 37s
nebular_1d_3dgrid_limitbfest testmode ON	29m 14s
combine_checksums	18s
	4h 40m 25s

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