[pallet-contracts] Remove riscv support (#5665) #28

Job	Run time
set-image	7s
test-frame-ui	34m 53s
test-full-crypto-feature	2m 36s
cargo-check-benches	0s
cargo-check-each-crate (1)	17m 35s
test-node-metrics	9m 12s
cargo-check-each-crate (2)	17m 9s
cargo-check-each-crate (3)	6m 4s
cargo-check-each-crate (4)	18m 15s
cargo-check-each-crate (5)	21m 54s
cargo-check-each-crate (6)	16m 50s
cargo-check-each-crate (7)	27m 8s
node-bench-regression-guard	5s
test-frame-examples-compile-to-wasm	2m 54s
test-deterministic-wasm	6m 21s
check-tracing	2m 10s
check-metadata-hash	5m 41s
cargo-hfuzz	7m 29s
All test misc tests passed	1s
	3h 16m 24s

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