remove _concrete_solve_adjoint and _concrete_solve_forward

Author: jClugstor

src/solve.jl

@@ -1069,39 +1069,3 @@ function _solve_forward(prob, sensealg, u0, p, originator, args...; merge_callba
     end
 end
 
-####
-# Catch undefined AD overload cases
-
-const ADJOINT_NOT_FOUND_MESSAGE = """
-                                  Compatibility with reverse-mode automatic differentiation requires SciMLSensitivity.jl.
-                                  Please install SciMLSensitivity.jl and do `using SciMLSensitivity`/`import SciMLSensitivity`
-                                  for this functionality. For more details, see https://sensitivity.sciml.ai/dev/.
-                                  """
-
-struct AdjointNotFoundError <: Exception end
-
-function Base.showerror(io::IO, e::AdjointNotFoundError)
-    print(io, ADJOINT_NOT_FOUND_MESSAGE)
-    println(io, TruncatedStacktraces.VERBOSE_MSG)
-end
-
-function _concrete_solve_adjoint(args...; kwargs...)
-    throw(AdjointNotFoundError())
-end
-
-const FORWARD_SENSITIVITY_NOT_FOUND_MESSAGE = """
-                                              Compatibility with forward-mode automatic differentiation requires SciMLSensitivity.jl.
-                                              Please install SciMLSensitivity.jl and do `using SciMLSensitivity`/`import SciMLSensitivity`
-                                              for this functionality. For more details, see https://sensitivity.sciml.ai/dev/.
-                                              """
-
-struct ForwardSensitivityNotFoundError <: Exception end
-
-function Base.showerror(io::IO, e::ForwardSensitivityNotFoundError)
-    print(io, FORWARD_SENSITIVITY_NOT_FOUND_MESSAGE)
-    println(io, TruncatedStacktraces.VERBOSE_MSG)
-end
-
-function _concrete_solve_forward(args...; kwargs...)
-    throw(ForwardSensitivityNotFoundError())
-end