Remove last OrdinaryDiffEq mention

[TorkelE]

Was going to finish this one off #1096, but @vyudu already did. Did the one case remaining in a docstring though. Also, there is this from the JumpInputs docstring:

using Catalyst, OrdinaryDiffEq, JumpProcesses, Plots
rn = @reaction_network begin
    k*(1 + sin(t)), 0 --> A
end
jinput = JumpInputs(rn, [:A => 0], (0.0, 10.0), [:k => .5])
@assert jinput.prob isa ODEProblem
jprob = JumpProblem(jinput)
sol = solve(jprob, Tsit5())
plot(sol, idxs = :A)

rn = @reaction_network begin
    k, 0 --> A
end
jinput = JumpInputs(rn, [:A => 0], (0.0, 10.0), [:k => .5])
@assert jinput.prob isa DiscreteProblem
jprob = JumpProblem(jinput)
sol = solve(jprob)
plot(sol, idxs = :A)

Could this be changed from OrdinaryDiffEq to OrdinaryDiffEqTsit5 @isaacsas?