boards: disable multi ekf on all ark flight controllers #2430

Job	Run time
Scan for Board Targets	34s
Build Group [base-px4]	5m 14s
Build Group [nuttx-px4-0]	8m 44s
Build Group [nuttx-px4-1]	14m 16s
Build Group [nuttx-px4-2]	14m 43s
Build Group [nuttx-px4-3]	6m 50s
Build Group [nuttx-mro-0]	11m 58s
Build Group [nuttx-mro-1]	3m 15s
Build Group [nuttx-nxp-0]	11m 52s
Build Group [nuttx-nxp-1]	5m 6s
Build Group [nuttx-cubepilot]	8m 17s
Build Group [nuttx-cuav]	6m 29s
Build Group [nuttx-matek]	6m 20s
Build Group [nuttx-ark-0]	6m 16s
Build Group [nuttx-ark-1]	5m 51s
Build Group [nuttx-micoair]	5m 39s
Build Group [nuttx-holybro-0]	8m 32s
Build Group [nuttx-holybro-1]	4m 27s
Build Group [nuttx-0]	10m 20s
Build Group [nuttx-1]	10m 21s
Build Group [nuttx-2]	10m 39s
Build Group [nuttx-3]	4m 22s
Build Group [armhf-0]	4m 17s
Build Group [aarch64-0]	2m 25s
Create Release and Upload Artifacts	0s
Upload Artifacts to S3	0s
	2h 56m 47s

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