un-revert the removal of the active=true method

Author: mcabbott

src/deprecations.jl

@@ -186,17 +186,6 @@ function update!(opt::Optimise.AbstractOptimiser, ::Params, grads::Union{Tuple,
 end
 
 
-function dropout(rng, x, p; dims=:, active::Bool=true)
-  if active
-    NNlib.dropout(rng, x, p; dims)
-  else
-    Base.depwarn("Flux.dropout(...; active=false) is deprecated. Please branch outside the function, or call dropout(x, 0) if you must.", :dropout)
-    return x
-  end
-end
-dropout(x, p; kwargs...) = dropout(NNlib._rng_from_array(x), x, p; kwargs...)
-
-
 # v0.14 deprecations
 
 # Enable these when 0.14 is released, and delete const ClipGrad = Optimise.ClipValue etc: 

test/layers/normalisation.jl

@@ -56,10 +56,10 @@ evalwgrad(f, x...) = pullback(f, x...)[1]
     y = m(x)
     @test count(a->a == 0, y) > 50
 
-    y = Flux.dropout(values(rng_kwargs)..., x, 0.9, active=true)
+    y = Flux.dropout(values(rng_kwargs)..., x, 0.9) # , active=true)
     @test count(a->a == 0, y) > 50
 
-    y = Flux.dropout(values(rng_kwargs)..., x, 0.9, active=false)
+    y = Flux.dropout(values(rng_kwargs)..., x, 0.9 * 0) # , active=false)
     @test count(a->a == 0, y) == 0
 
     # CPU RNGs map onto CPU ok