remove serial #1847

Job	Run time
check-if-needed	20s
arduino (cpb)	4m 58s
arduino (cpc)	3m 6s
arduino (cpx_ada)	5m 3s
arduino (esp32)	8m 41s
arduino (esp8266)	8m 19s
arduino (feather32u4)	3m 28s
arduino (feather_esp32c6)	5m 14s
arduino (feather_m0_express)	4m 49s
arduino (feather_m4_express)	4m 0s
arduino (feather_rp2040)	7m 19s
arduino (feather_rp2040_adalogger)	4m 29s
arduino (flora)	3m 22s
arduino (funhouse)	5m 37s
arduino (gemma)	3m 31s
arduino (gemma_m0)	4m 57s
arduino (hallowing_m0)	4m 5s
arduino (hallowing_m4_tinyusb)	5m 7s
arduino (ledglasses_nrf52840)	5m 13s
arduino (magtag)	6m 34s
arduino (metro_m0)	3m 33s
arduino (metro_m0_tinyusb)	4m 25s
arduino (metro_m4)	3m 31s
arduino (metro_m4_tinyusb)	3m 55s
arduino (monster_m4sk)	3m 31s
arduino (monster_m4sk_tinyusb)	4m 23s
arduino (neokeytrinkey_m0)	3m 22s
arduino (neotrellis_m4)	4m 29s
arduino (nrf52832)	3m 5s
arduino (nrf52840)	4m 54s
arduino (pixeltrinkey_m0)	3m 30s
arduino (protrinket_5v)	3m 0s
arduino (proxlighttrinkey_m0)	3m 52s
arduino (pybadge)	4m 3s
arduino (pycamera_s3)	7m 32s
arduino (pygamer)	3m 47s
arduino (pyportal)	4m 27s
arduino (qualia_s3_rgb666)	5m 5s
arduino (qt2040_trinkey)	4m 22s
arduino (qtpy_m0)	3m 47s
arduino (qtpy_esp32s2)	6m 9s
arduino (rotarytrinkey_m0)	3m 23s
arduino (sht4xtrinkey_m0)	3m 35s
arduino (slidetrinkey_m0)	3m 9s
arduino (trinket_5v)	3m 5s
arduino (trinket_m0)	3m 36s
arduino (uno)	4m 4s
	3h 27m 46s

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