Cleanup. Remove unnecessary self.clone() calls #389

Job	Run time
mavlink-dump	1m 5s
mavlink-dump	1m 5s
internal-tests (ardupilotmega)	1m 9s
internal-tests (ardupilotmega)	1m 9s
formatting	12s
formatting	12s
linting	1m 47s
linting	1m 47s
internal-tests (asluav)	1m 26s
internal-tests (asluav)	1m 26s
internal-tests (matrixpilot)	1m 30s
internal-tests (matrixpilot)	1m 30s
msrv	1m 32s
msrv	1m 24s
internal-tests (minimal)	1m 11s
internal-tests (minimal)	1m 11s
internal-tests (paparazzi)	1m 23s
internal-tests (paparazzi)	1m 23s
internal-tests (python_array_test)	1m 23s
internal-tests (python_array_test)	1m 23s
internal-tests (slugs)	1m 10s
internal-tests (slugs)	1m 10s
internal-tests (standard)	1m 9s
internal-tests (standard)	1m 9s
internal-tests (test)	1m 9s
internal-tests (test)	1m 9s
internal-tests (ualberta)	1m 22s
internal-tests (ualberta)	1m 22s
internal-tests (uavionix)	1m 8s
internal-tests (uavionix)	1m 8s
internal-tests (icarous)	1m 10s
internal-tests (icarous)	1m 10s
internal-tests (common)	1m 9s
internal-tests (common)	1m 9s
docs	58s
docs	58s
build	0s
build	0s
test-embedded-size	0s
test-embedded-size	0s
	43m 38s

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