Disable Attach function and remove dep to go.bug.st/serial.v1 #4692

Job	Run time
run-determination	1s
check-errors (./)	11s
check-errors (arduino/discovery/discovery_client)	12s
check-errors (client_example)	13s
check-style (./)	19s
check-errors (commands/daemon/term_example)	12s
check-style (arduino/discovery/discovery_client)	13s
check-outdated (./)	14s
check-errors (docsgen)	12s
check-style (client_example)	15s
check-outdated (arduino/discovery/discovery_client)	12s
check-style (commands/daemon/term_example)	14s
check-outdated (client_example)	12s
check-style (docsgen)	15s
check-outdated (commands/daemon/term_example)	15s
check-outdated (docsgen)	13s
check-formatting (./)	15s
check-formatting (arduino/discovery/discovery_client)	12s
check-formatting (client_example)	18s
build (arduino/discovery/discovery_client)	14s
check-formatting (commands/daemon/term_example)	14s
build (client_example)	16s
check-formatting (docsgen)	12s
build (commands/daemon/term_example)	11s
check-config (./)	13s
check-config (arduino/discovery/discovery_client)	11s
check-config (client_example)	11s
check-config (docsgen)	14s
	6m 4s

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