chore: remove all tracing logs relates to pin/unpin

[BowenXiao1999]

What's changed and what's your intention?

We should consider visualize the info in Grafana/Dashboard to help debug instead of directly tracing it.
Otherwise the log size may be huge.

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in ./risedev check (or alias, ./risedev c)

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

Merging #3151 (9d53704) into main (d571760) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3151   +/-   ##
=======================================
  Coverage   73.51%   73.51%           
=======================================
  Files         738      738           
  Lines      101671   101668    -3     
=======================================
+ Hits        74743    74744    +1     
+ Misses      26928    26924    -4     

Flag	Coverage Δ
rust	73.51% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...frontend/src/scheduler/hummock_snapshot_manager.rs	18.42% <ø> (+0.47%)	⬆️
src/meta/src/hummock/hummock_manager.rs	86.95% <ø> (+0.08%)	⬆️
src/meta/src/barrier/mod.rs	69.45% <0.00%> (+0.32%)	⬆️

📣 Codecov can now indicate which changes are the most critical in Pull Requests. Learn more