remove fixed oracle (#6196) #20024

Job	Run time
filter-changes	3s
build-tools (ubuntu-22.04)	35s
lint	3m 21s
build-tools (ubuntu-latest-arm-8-cores)	12m 8s
quicktests	1m 26s
build (ubuntu-22.04)	47s
build-tools (macos-13)	1m 52s
build (ubuntu-latest-arm-8-cores)	2m 48s
build-tools (self-hosted, macOS, ARM64, go-spacemesh)	10m 27s
unittests (ubuntu-22.04)	22m 44s
build (macos-13)	2m 21s
build-tools (windows-2022)	5m 35s
unittests (ubuntu-latest-arm-8-cores)	30m 2s
build (self-hosted, macOS, ARM64, go-spacemesh)	21s
unittests (self-hosted, macOS, ARM64, go-spacemesh)	19m 31s
build (windows-2022)	5m 5s
unittests (windows-2022)	54m 53s
ci-status	3s
	2h 54m 2s

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