refactor: Remove double empty lines

HepLean/FlavorPhysics/CKMMatrix/Invariants.lean

@@ -15,17 +15,14 @@ this equivalence.
 
 Of note, this file defines the complex jarlskog invariant.
 
-
 -/
 open Matrix Complex
 open ComplexConjugate
 open CKMMatrix
 
-
 noncomputable section
 namespace Invariant
 
-
 /-- The complex jarlskog invariant for a CKM matrix. -/
 @[simps!]
 def jarlskogℂCKM (V : CKMMatrix) : ℂ :=
@@ -62,6 +59,5 @@ standard parameterization. -/
 def mulExpδ₁₃ (V : Quotient CKMMatrixSetoid) : ℂ :=
   jarlskogℂ V + VusVubVcdSq V
 
-
 end Invariant
 end