* Prune some duplicate dependencies

* Remove ed25519-dalek 0.9.1
* Remove hex 0.3.2
* Remove parity-wasm 0.40.3
* Remove pwasm-utils 0.11.0
* Remove wasmi-validation 0.2.0
* Remove quickcheck 0.8.5
* Remove tempdir (Replace tempdir with tempfile)

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* Remove useless tempdir_with_prefix

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* Remove derive_more 0.15

Signed-off-by: koushiro <koushiro.cqx@gmail.com>