chore(share/ipld): obliterate expensive ipld getter tracing

[Wondertan]

The load these traces can produce is massive. In the case of ODS size 128 and the whole block is sampled for namespace data, it will be 48896 spans (128*2-1)*128*2 - (128 * 128). Besides, there is zero value this tracing brought us so far.

[codecov-commenter]

Codecov Report

Merging #2832 (a755aa7) into main (00b32a8) will decrease coverage by 0.35%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2832      +/-   ##
==========================================
- Coverage   51.50%   51.16%   -0.35%     
==========================================
  Files         168      168              
  Lines       10764    10727      -37     
==========================================
- Hits         5544     5488      -56     
- Misses       4743     4758      +15     
- Partials      477      481       +4     

Files	Coverage Δ
share/ipld/get.go	65.71% <ø> (-2.09%)	⬇️
share/ipld/get_shares.go	89.65% <ø> (-1.78%)	⬇️
share/ipld/namespace_data.go	78.57% <ø> (-5.64%)	⬇️
share/ipld/nmt.go	50.70% <ø> (ø)

... and 5 files with indirect coverage changes