remove possibly redundant code to see if tests fail

`Union{Bidiagonal,AbstractTriangular} \ UniformScaling`
seems redundant because there's another method
`AbstractMatrix \ UniformScaling`

Author: ZeppLu

stdlib/LinearAlgebra/src/uniformscaling.jl

@@ -172,8 +172,6 @@ end
 /(J::UniformScaling, x::Number) = UniformScaling(J.λ/x)
 
 \(J1::UniformScaling, J2::UniformScaling) = J1.λ == 0 ? throw(SingularException(1)) : UniformScaling(J1.λ\J2.λ)
-\(A::Union{Bidiagonal{T},AbstractTriangular{T}}, J::UniformScaling) where {T<:Number} =
-    rmul!(inv(A), J.λ)
 \(J::UniformScaling, A::AbstractVecOrMat) = J.λ == 0 ? throw(SingularException(1)) : J.λ\A
 \(A::AbstractMatrix, J::UniformScaling) = rmul!(inv(A), J.λ)