cleanups

[arnetheduck]

• remove redundant error handling (reduces warnings)
• remove reundant copying

[kaiserd]

Thank you very much. LGTM.

[kaiserd]

moving the gossipsub cleanups in a separate PR.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.59259% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 84.51%. Comparing base (02c96fc) to head (354513b).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1092      +/-   ##
==========================================
- Coverage   84.53%   84.51%   -0.03%     
==========================================
  Files          91       91              
  Lines       15517    15529      +12     
==========================================
+ Hits        13118    13125       +7     
- Misses       2399     2404       +5     

Files	Coverage Δ
libp2p/multiaddress.nim	86.93% <ø> (ø)
libp2p/protocols/pubsub/gossipsub/behavior.nim	89.02% <100.00%> (+0.19%)	⬆️
libp2p/protocols/pubsub/gossipsub/scoring.nim	90.06% <ø> (-0.13%)	⬇️
libp2p/protocols/pubsub/pubsub.nim	84.29% <ø> (ø)
libp2p/protocols/pubsub/rpc/messages.nim	52.85% <ø> (ø)
libp2p/transports/tcptransport.nim	80.57% <100.00%> (ø)
libp2p/multistream.nim	86.17% <50.00%> (+0.07%)	⬆️
libp2p/protocols/pubsub/mcache.nim	82.75% <91.66%> (-9.25%)	⬇️

... and 3 files with indirect coverage changes