Update src/tangent_types/structural_tangent.jl

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: oxinabox

src/tangent_types/structural_tangent.jl

@@ -94,7 +94,6 @@ struct MutableTangent{P,F} <: StructuralTangent{P}
     end
 end
 
-
 ####################################################################
 # StructuralTangent Common