core: ignore no known remotes (#2398) #4171

Job	Run time
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	7m 14s
ubuntu-20.04 (mavsdk, hunter)	8m 38s
coverage (ubuntu-20.04)	6m 59s
alpine 3.19.0 (musl)	39m 0s
Ubuntu/Debian packaging (Ubuntu 20.04)	9m 40s
ubuntu-20.04 (package, non-mavsdk_server)	7m 54s
android-arm	20m 45s
linux-armv6	6m 56s
ubuntu-22.04 (package, non-mavsdk_server)	6m 28s
linux-armv6-musl	38m 10s
android-arm64	20m 45s
linux-armv7	7m 7s
ubuntu-24.04 (package, non-mavsdk_server)	7m 30s
linux-armv7l-musl	38m 25s
android-x86	21m 13s
linux-arm64	7m 4s
linux-arm64-musl	41m 11s
android-x86_64	21m 42s
linux-arm64-lts	7m 9s
ios	1h 15m 8s
ios_simulator_x64	45m 18s
macOS x64	42m 14s
ubuntu-24.04 (style and proto check)	26m 54s
ios_simulator_arm64	1h 18m 27s
ubuntu-20.04 (mavsdk_server, superbuild)	48m 5s
macOS arm64	19m 54s
ubuntu-22.04 (mavsdk_server, superbuild)	39m 36s
macOS framework x64	40m 9s
Windows	13m 52s
ubuntu-24.04 (mavsdk_server, superbuild)	44m 11s
macOS framework arm64	20m 35s
ubuntu-24.04 (mavsdk_server, superbuild)	43m 45s
ubuntu-24.04 (mavsdk_server, superbuild)	43m 11s
iOS XCFramework	1m 40s
	15h 6m 49s

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