Update gammapkt.cc #7283

Job	Run time
classicmode_1d_3dgrid	4m 29s
classicmode_3d	7m 56s
kilonova_1d_1dgrid	4m 46s
kilonova_1d_3dgrid	5m 10s
kilonova_2d_2dgrid	6m 42s
kilonova_2d_2dgrid_barnesthermalisation	5m 21s
kilonova_2d_2dgrid_expansionopac	5m 2s
kilonova_2d_2dgrid_xcomgammaphotoion	5m 32s
kilonova_2d_3dgrid	7m 8s
nebular_1d_3dgrid	11m 37s
nebular_1d_3dgrid_limitbfest	14m 20s
classicmode_1d_3dgrid testmode ON	15m 30s
classicmode_3d testmode ON	23m 53s
kilonova_1d_1dgrid testmode ON	10m 35s
kilonova_1d_3dgrid testmode ON	11m 12s
kilonova_2d_2dgrid testmode ON	18m 54s
kilonova_2d_2dgrid_barnesthermalisation testmode ON	16m 53s
kilonova_2d_2dgrid_expansionopac testmode ON	14m 42s
kilonova_2d_2dgrid_xcomgammaphotoion testmode ON	15m 44s
kilonova_2d_3dgrid testmode ON	19m 37s
nebular_1d_3dgrid testmode ON	26m 16s
nebular_1d_3dgrid_limitbfest testmode ON	27m 26s
combine_checksums	18s
	4h 39m 3s

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