remove skip from examples

src/examples.jl

@@ -1055,10 +1055,10 @@ const _examples = PlotExample[
         f(x,a) = 1/x + a*x^2
         xs = collect(0.1:0.05:2.0);
         as = collect(0.2:0.1:2.0);
-        
+
         x_grid = [x for x in xs for y in as];
         a_grid = [y for x in xs for y in as];
-        
+
         plot(x_grid, a_grid, f.(x_grid,a_grid),
             st = :surface,
             xlabel = "longer xlabel",
@@ -1074,7 +1074,7 @@ const _examples = PlotExample[
             using Plots
             using TestImages
             img = testimage("lighthouse")
-            
+
             # plot the image reversing the first dimension and setting yflip = false
             plot([-π, π], [-1, 1], reverse(img, dims=1), yflip=false, aspect_ratio=:none)
             # plot other data
@@ -1090,15 +1090,15 @@ const _examples = PlotExample[
             ϕs = range(-π, π, length=50)
             θs = range(0, π, length=25)
             θqs = range(1, π-1, length=25)
-            
+
             x = vec([sin(θ) * cos(ϕ) for (ϕ, θ) in Iterators.product(ϕs, θs)])
             y = vec([sin(θ) * sin(ϕ) for (ϕ, θ) in Iterators.product(ϕs, θs)])
             z = vec([cos(θ) for (ϕ, θ) in Iterators.product(ϕs, θs)])
-            
+
             u = 0.1 * vec([sin(θ) * cos(ϕ) for (ϕ, θ) in Iterators.product(ϕs, θqs)])
             v = 0.1 * vec([sin(θ) * sin(ϕ) for (ϕ, θ) in Iterators.product(ϕs, θqs)])
             w = 0.1 * vec([cos(θ) for (ϕ, θ) in Iterators.product(ϕs, θqs)])
-            
+
             quiver(x,y,z, quiver=(u,v,w))
         end]
     ),
@@ -1120,7 +1120,6 @@ _backend_skips = Dict(
         32, # spy
         49, # polar heatmap
         51, # image with custom axes
-        52, # 3d quiver
     ],
 )