Tracer refactor: removed dead code and excessive logging

[robert-smartbear]

No description provided.

[github-actions]

BugsnagPerformance.framework binary size decreased by 1,296 bytes from 838,136 to 836,840 🎉

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [ = ]       0  +9.4% +1.27Ki    [__LINKEDIT]
  +2.6% +1.08Ki  +2.6% +1.08Ki    [__TEXT]
  +9.8%    +224   +10%    +224    [__DATA]
  +0.6%     +80  +0.6%     +80    [__DATA_CONST]
  -0.4%      -8  -0.4%      -8    Rebase Info
  -1.0%      -8  -1.0%      -8    __DATA,__objc_ivar
  -0.2%     -16  -0.2%     -16    __DATA_CONST,__const
  -0.2%     -16  -0.2%     -16    __TEXT,__unwind_info
  -0.5%     -24  -0.5%     -24    __DATA,__objc_selrefs
  -0.3%     -29  -0.3%     -29    __TEXT,__cstring
  -0.7%     -64  -0.7%     -64    __DATA_CONST,__cfstring
  -0.5%     -92  -0.5%     -92    __TEXT,__gcc_except_tab
  -0.5%     -96  -0.5%     -96    __TEXT,__objc_stubs
  -0.6%    -192  -0.6%    -192    __DATA,__objc_const
  -1.0%    -231  -1.0%    -231    __TEXT,__objc_methname
  -0.3%    -592  -0.3%    -592    Symbol Table
  -0.3%    -644  -0.3%    -644    __TEXT,__text
  -0.3%    -696  -0.3%    -696    String Table
  -0.2% -1.27Ki  [ = ]       0    TOTAL

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