Remove unused Samplers #6873

Job	Run time
Fuzz	13m 7s
Unit (macos-12)	8m 12s
Unit (ubuntu-20.04)	6m 41s
Unit (ubuntu-22.04)	6m 42s
e2e	10m 5s
Unit (windows-2022)	17m 19s
e2e_existing_network	3m 43s
Unit (custom-arm64-focal)	13m 39s
Unit (custom-arm64-jammy)	11m 49s
Protobuf Lint	6s
Up-to-date protobuf	25s
Lint	3m 26s
Upgrade	3m 24s
Up-to-date go.mod and go.sum	8s
Up-to-date mocks	2m 8s
Build Antithesis avalanchego images	6m 7s
Build Antithesis xsvm images	8m 25s
Image build	10m 45s
	2h 6m 11s

Provide feedback