Update gammapkt.cc #7288

Job	Run time
classicmode_1d_3dgrid	4m 21s
classicmode_3d	7m 58s
kilonova_1d_1dgrid	5m 11s
kilonova_1d_3dgrid	4m 31s
kilonova_2d_2dgrid	6m 23s
kilonova_2d_2dgrid_barnesthermalisation	5m 40s
kilonova_2d_2dgrid_expansionopac	5m 16s
kilonova_2d_2dgrid_xcomgammaphotoion	5m 13s
kilonova_2d_3dgrid	7m 4s
nebular_1d_3dgrid	12m 1s
nebular_1d_3dgrid_limitbfest	14m 7s
classicmode_1d_3dgrid testmode ON	15m 36s
classicmode_3d testmode ON	23m 34s
kilonova_1d_1dgrid testmode ON	10m 54s
kilonova_1d_3dgrid testmode ON	11m 10s
kilonova_2d_2dgrid testmode ON	18m 30s
kilonova_2d_2dgrid_barnesthermalisation testmode ON	16m 57s
kilonova_2d_2dgrid_expansionopac testmode ON	16m 17s
kilonova_2d_2dgrid_xcomgammaphotoion testmode ON	16m 52s
kilonova_2d_3dgrid testmode ON	19m 59s
nebular_1d_3dgrid testmode ON	25m 25s
nebular_1d_3dgrid_limitbfest testmode ON	30m 34s
combine_checksums	19s
	4h 43m 52s

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