remove nonfunctional doctest filter

src/quantumchannel.jl

@@ -6,7 +6,7 @@ Delay and background noise processes are supported.
 The function `put!` is used to take the contents of a `RegRef` and put it in the channel.
 That state can can then be received by a register (after a delay) using the `take!` method.
 
-```jldoctest; filter = r"(\\d{5})\\d+" => s"(\\d{5})\\d+"
+```jldoctest
 julia> using QuantumSavory, ResumableFunctions, ConcurrentSim
 
 julia> regA = Register(1); regB = Register(1);
@@ -40,8 +40,6 @@ julia> regA
 Register with 1 slots: [ Qubit ]
   Slots:
     nothing
-
-julia> regB;
 ```
 """
 struct QuantumChannel{T}