Remove blocks counting in copying rel pipeline

[ray6080]

Removes the unnecessary first pass counting of file blocks in Reader for csv files.

uw5, ldbc100 knows

before change	after change
26888.49ms	20519.79 ms

[codecov]

Codecov Report

Patch coverage: 92.03% and project coverage change: +0.13% 🎉

Comparison is base (46f4039) 89.87% compared to head (c756eff) 90.01%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2013      +/-   ##
==========================================
+ Coverage   89.87%   90.01%   +0.13%     
==========================================
  Files         890      903      +13     
  Lines       32909    32922      +13     
==========================================
+ Hits        29578    29635      +57     
+ Misses       3331     3287      -44     

Files Changed	Coverage Δ
src/include/common/data_chunk/sel_vector.h	100.00% <ø> (ø)
.../include/processor/operator/persistent/copy_node.h	100.00% <ø> (ø)
src/include/processor/plan_mapper.h	100.00% <ø> (ø)
src/include/storage/copier/table_copy_utils.h	100.00% <ø> (+50.00%)	⬆️
src/storage/copier/table_copy_utils.cpp	76.82% <ø> (+9.62%)	⬆️
...processor/operator/persistent/reader_functions.cpp	87.41% <87.41%> (ø)
src/include/processor/operator/persistent/reader.h	100.00% <100.00%> (ø)
...e/processor/operator/persistent/reader_functions.h	100.00% <100.00%> (ø)
...clude/processor/operator/persistent/reader_state.h	100.00% <100.00%> (+6.45%)	⬆️
src/processor/map/map_copy_from.cpp	100.00% <100.00%> (ø)
... and 4 more

... and 53 files with indirect coverage changes

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