Remove redundant TryFrom/Into & FromIterator imports

[ascjones]

Since edition 2021 they are in the prelude

[cmichi]

+4 −47

Nice!

[codecov-commenter]

Codecov Report

Merging #1206 (1474bc0) into master (3f7ea2b) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1206      +/-   ##
==========================================
- Coverage   79.03%   78.98%   -0.05%     
==========================================
  Files         229      229              
  Lines        8667     8667              
==========================================
- Hits         6850     6846       -4     
- Misses       1817     1821       +4     

Impacted Files	Coverage Δ
crates/env/src/types.rs	22.22% <ø> (ø)
crates/lang/ir/src/ir/attrs.rs	82.27% <ø> (ø)
crates/lang/ir/src/ir/blake2.rs	80.00% <ø> (ø)
crates/lang/ir/src/ir/chain_extension.rs	93.46% <ø> (ø)
crates/lang/ir/src/ir/config.rs	96.49% <ø> (ø)
crates/lang/ir/src/ir/contract.rs	100.00% <ø> (ø)
crates/lang/ir/src/ir/ink_test.rs	87.50% <ø> (ø)
crates/lang/ir/src/ir/item/event.rs	89.55% <ø> (ø)
crates/lang/ir/src/ir/item/mod.rs	60.71% <ø> (ø)
crates/lang/ir/src/ir/item/storage.rs	80.64% <ø> (ø)
... and 14 more

---

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[paritytech-cicd-pr]

🦑 📈 ink! Example Contracts ‒ Changes Report 📉 🦑

These are the results when building the examples/* contracts from this branch with cargo-contract 1.1.0-ef194a0 and comparing them to ink! master:

	Δ Optimized Size	Δ Used Gas	Total Optimized Size	Total Used Gas
accumulator			1.03 K
adder			2.17 K
contract-introspection			2.37 K
contract-terminate			0.94 K	214_418
contract-transfer			8.15 K	14_418
delegate-calls			2.99 K	14_950
delegator			6.37 K	46_295
dns			8.84 K	43_254
erc1155			17.23 K	86_508
erc20			8.49 K	43_254
erc721			11.81 K	115_344
flipper			1.31 K	14_418
forward-calls			2.90 K	29_536
incrementer			1.21 K	14_418
multisig			25.20 K	93_527
rand-extension			3.92 K	14_418
subber			2.19 K
trait-erc20			8.76 K	43_254
trait-flipper			1.00 K	14_418
trait-incrementer			1.19 K	28_836
upgradeable-flipper			1.55 K

Link to the run | Last update: Fri Apr 1 13:37:00 CEST 2022

[HCastano]

Interesting, you'd think this is something Clippy could catch 🤷‍♂️