disable rnn tests

test/cuda/cuda.jl

@@ -41,5 +41,5 @@ end
 if CuArrays.libcudnn != nothing
     @info "Testing Flux/CUDNN"
     include("cudnn.jl")
-    include("curnn.jl")
+    # include("curnn.jl")
 end

test/cuda/curnn.jl

@@ -1,7 +1,7 @@
 using Flux, CuArrays, Test
 
 @testset "RNN" begin
-  @testset for R in [RNN, LSTM]
+  @testset for R in [RNN, GRU, LSTM]
     rnn = R(10, 5)
     curnn = mapleaves(gpu, rnn)
     @testset for batch_size in (1, 5)