Reduce lotus-miner startup spam

[magik6k]

Those 2 logs would be printed on each lotus-miner startup for each sector, which even for not-so-big miners means tens of thousands of rather useless log lines on every restart

[codecov]

Codecov Report

Merging #7205 (2293ecd) into master (7db4dda) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7205      +/-   ##
==========================================
+ Coverage   39.10%   39.12%   +0.02%     
==========================================
  Files         608      608              
  Lines       64604    64602       -2     
==========================================
+ Hits        25262    25277      +15     
+ Misses      34951    34935      -16     
+ Partials     4391     4390       -1     

Impacted Files	Coverage Δ
extern/sector-storage/manager.go	64.94% <ø> (-0.11%)	⬇️
extern/storage-sealing/states_proving.go	24.61% <ø> (-1.15%)	⬇️
chain/stmgr/call.go	62.00% <0.00%> (-4.00%)	⬇️
chain/types/tipset_key.go	85.96% <0.00%> (-3.51%)	⬇️
chain/vm/vm.go	59.47% <0.00%> (-1.12%)	⬇️
paychmgr/simple.go	79.93% <0.00%> (-0.93%)	⬇️
miner/miner.go	51.65% <0.00%> (-0.67%)	⬇️
chain/messagepool/selection.go	80.93% <0.00%> (+0.40%)	⬆️
chain/sync.go	61.63% <0.00%> (+0.43%)	⬆️
markets/storageadapter/dealpublisher.go	84.18% <0.00%> (+0.56%)	⬆️
... and 8 more

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