Remove check that if primal is TangentBundle so is coeff

Author: oxinabox

src/tangent.jl

@@ -202,15 +202,13 @@ end
 const TaylorBundle{N, B, P} = TangentBundle{N, B, TaylorTangent{P}}
 
 function TaylorBundle{N, B}(primal::B, coeffs) where {N, B}
-#    check_taylor_invariants(coeffs, primal, N) # TODO: renable this
+    check_taylor_invariants(coeffs, primal, N)
     _TangentBundle(Val{N}(), primal, TaylorTangent(coeffs))
 end
 
 function check_taylor_invariants(coeffs, primal, N)
     @assert length(coeffs) == N
-    if isa(primal, TangentBundle)
-        @assert isa(coeffs[1], TangentBundle)
-    end
+
 end
 @ChainRulesCore.non_differentiable check_taylor_invariants(coeffs, primal, N)