Removed failing tests

The following tests have been commented out because they used the deprecated (now removed) Jansen Rit blox:
* Canonical & Jansen-Rit Network
* OUBlox & Jansen-Rit network
* Time-series output
@hstrey do we need these? If so then I'll modify to the new blocks - if not we can delete. They're just commented out for now.

src/blox/neural_mass.jl

@@ -248,9 +248,9 @@ struct WilsonCowan <: NeuralMassBlox
 end
 
 """
-    JansenRit(name, namespace, τ, H, λ, r, cortical)
+    LarterBreakspear(name, namespace, ...)
 
-    Create a Jansen Rit blox as described in Liu et al.
+    Create a Larter Breakspear blox described in Endo et al. For a full list of the parameters used see the reference.
     The formal definition of this blox is:
  """
     # ```math