fix typo

Author: matbesancon

src/linalg.jl

@@ -770,8 +770,6 @@ function dot(
     return _dot_quadratic_form(a, Q, b)
 end
 
-dot(::SparseArrays.AbstractSparseVector, ::Union{LinearAlgebra.Hermitian{<:Real, Union{StridedMatrix, BitMatrix}}, LinearAlgebra.Symmetric{<:Real, Union{StridedMatrix, BitMatrix}}}, ::SparseArrays.AbstractSparseVector)
-
 # actual function implementation called by the method dispatch
 function _dot_quadratic_form(a, Q, b)
     n = length(a)