chore: clippy lints

[niklaslong]

Fixes a few needless borrow lints.

In addition some of the lints are caused by false positives: rust-lang/rust-clippy#7422, these should be fixed in the next nightly release.

[ljedrz]

Humans will never beat clippy at this lint 🙂.

LGTM 👌

[codecov]

Codecov Report

Merging #912 (a0f93ae) into staging (0152f3f) will increase coverage by 0.36%.
The diff coverage is 94.14%.

@@             Coverage Diff             @@
##           staging     #912      +/-   ##
===========================================
+ Coverage    83.14%   83.51%   +0.36%     
===========================================
  Files           39       36       -3     
  Lines          724      734      +10     
===========================================
+ Hits           602      613      +11     
+ Misses         122      121       -1     

Impacted Files	Coverage Δ
consensus/src/error.rs	0.00% <ø> (ø)
metrics/src/lib.rs	100.00% <ø> (ø)
network/src/errors/network.rs	0.00% <ø> (ø)
network/src/lib.rs	100.00% <ø> (ø)
network/src/message/message.rs	14.28% <ø> (+3.75%)	⬆️
network/src/message/payload_capnp.rs	100.00% <ø> (ø)
network/src/message/version.rs	60.00% <0.00%> (+26.66%)	⬆️
rpc/src/lib.rs	100.00% <ø> (ø)
snarkos/main.rs	100.00% <ø> (ø)
storage/src/lib.rs	100.00% <ø> (ø)
... and 30 more

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