Remove deprecated funcs from pdata related to mutable slices

[bogdandrutu]

Signed-off-by: Bogdan bogdandrutu@gmail.com

[codecov]

Codecov Report

Merging #5754 (f6bdb5f) into main (06599bc) will increase coverage by 0.25%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5754      +/-   ##
==========================================
+ Coverage   91.52%   91.78%   +0.25%     
==========================================
  Files         192      192              
  Lines       11426    11394      -32     
==========================================
  Hits        10458    10458              
+ Misses        773      742      -31     
+ Partials      195      194       -1     

Impacted Files	Coverage Δ
pdata/internal/common.go	95.38% <ø> (+3.53%)	⬆️
pdata/internal/metrics.go	92.50% <ø> (+8.40%)	⬆️

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