Remove `pasta` dependency (#180) #544

Job	Run time
Clippy lint checks	52s
Wasm-compatibility (wasm32-unknown-unknown)	2m 29s
Rustfmt	21s
Wasm-compatibility (wasm32-wasi)	2m 24s
Bench (default)	2m 52s
Test (default)	4m 48s
Bench (asm)	4m 36s
Test (bn256-table)	4m 52s
Bench (bn256-table)	4m 57s
Spell Check with Typos	3s
Test (derive_serde)	4m 52s
Test (asm)	4m 33s
	37m 39s

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