FIX: [grid2] add remove duplicated pins and pull out filter price prec func

[c9s]

No description provided.

[bbgokarma-bot]

Welcome back! @c9s, This pull request may get 282 BBG.

[bbgokarma-bot]

Re-estimated karma: this pull request may get 293 BBG

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (v1.50@bded2ed). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             v1.50    #1239   +/-   ##
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  Coverage         ?   21.03%           
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  Files            ?      509           
  Lines            ?    35179           
  Branches         ?        0           
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  Hits             ?     7399           
  Misses           ?    27233           
  Partials         ?      547           

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[gx578007]

It might be worth logging errors if any duplicated pin is found.

[bbgokarma-bot]

Hi @c9s,

Well done! 313 BBG has been sent to your polygon wallet. Please check the following tx:

https://polygonscan.com/tx/0x8c681b632ba940123c65c1d650677338a670cb8f447925c5eec98207bf4d7355

Thank you for your contribution!