Remove some redundant code

[ususdei]

Just some automatically applied suggestions from clippy 0.1.84.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 80.88%. Comparing base (74bd1e5) to head (13605ac).

Files with missing lines	Patch %	Lines
src/iface/interface/ipv4.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1032      +/-   ##
==========================================
- Coverage   80.88%   80.88%   -0.01%     
==========================================
  Files          81       81              
  Lines       28452    28447       -5     
==========================================
- Hits        23013    23008       -5     
  Misses       5439     5439              

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[whitequark]

I think this change doesn't really provide value, only adds churn.

[ususdei]

It doesn't add much by itself, agreed.
Maybe just someone else would get annoyed by the warnings.
Other than that I just think, a clean codebase with fewer distractions makes development easier.
But it is going to converge anyway. I just have to wait until MSRV hits 1.84. ;-)