refactor: LinCircle constructor and no use of fill function

[CarloVarni]

Defining a constructor makes the fillLineCircle function redundant

[codecov]

Codecov Report

Merging #2006 (73963af) into main (1f7443e) will increase coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #2006      +/-   ##
==========================================
+ Coverage   49.80%   49.83%   +0.02%     
==========================================
  Files         413      414       +1     
  Lines       23606    23594      -12     
  Branches    10681    10681              
==========================================
  Hits        11758    11758              
+ Misses       4343     4331      -12     
  Partials     7505     7505              

Impacted Files	Coverage Δ
Core/include/Acts/Seeding/SeedFinder.ipp	0.00% <0.00%> (ø)
Core/include/Acts/Seeding/SeedFinderUtils.hpp	0.00% <0.00%> (ø)
Core/include/Acts/Seeding/SeedFinderUtils.ipp	0.00% <ø> (ø)

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[github-actions]

📊 Physics performance monitoring for 73963af

Full report
Seeding: seeded, truth estimated, orthogonal
CKF: seeded, truth smeared, truth estimated, orthogonal
IVF: seeded, truth smeared, truth estimated, orthogonal
Ambiguity resolution: seeded, orthogonal
Truth tracking
Truth tracking (GSF)

Vertexing

Vertexing vs. mu

IVF seeded

IVF truth_smeared

IVF truth_estimated

IVF orthogonal

Seeding

Seeding seeded

Seeding truth_estimated

Seeding orthogonal

CKF

CKF seeded

CKF truth_smeared

CKF truth_estimated

CKF orthogonal

Ambiguity resolution

seeded

Truth tracking (Kalman Filter)

Truth tracking

Truth tracking (GSF)

Truth tracking

[LuisFelipeCoelho]

Do you know if this has any effect on CPU performance?