remove copypasted code that unnecessarily created a new notebook file…

… away from the project

test/testsets/random_seed.jl

@@ -1,30 +1,25 @@
 include("../utilities/prelude.jl")
 
 @testset "seeded random numbers are consistent across runs" begin
-    mktempdir() do dir
-        content =
-            read(joinpath(@__DIR__, "../examples/random_seed/random_seed.qmd"), String)
-        cd(dir) do
-            server = QuartoNotebookRunner.Server()
-            write("notebook.qmd", content)
+    notebook = joinpath(@__DIR__, "../examples/random_seed/random_seed.qmd")
 
-            jsons = map(1:2) do _
-                QuartoNotebookRunner.run!(server, "notebook.qmd"; showprogress = false)
-            end
+    server = QuartoNotebookRunner.Server()
 
-            _output(cell) = only(cell.outputs).data["text/plain"]
+    jsons = map(1:2) do _
+        QuartoNotebookRunner.run!(server, notebook; showprogress = false)
+    end
 
-            @test tryparse(Float64, _output(jsons[1].cells[2])) !== nothing
-            @test tryparse(Float64, _output(jsons[1].cells[4])) !== nothing
-            @test tryparse(Float64, _output(jsons[1].cells[6])) !== nothing
+    _output(cell) = only(cell.outputs).data["text/plain"]
 
-            @test length(unique([_output(jsons[1].cells[i]) for i in [2, 4, 6]])) == 3
+    @test tryparse(Float64, _output(jsons[1].cells[2])) !== nothing
+    @test tryparse(Float64, _output(jsons[1].cells[4])) !== nothing
+    @test tryparse(Float64, _output(jsons[1].cells[6])) !== nothing
 
-            @test _output(jsons[1].cells[2]) == _output(jsons[2].cells[2])
-            @test _output(jsons[1].cells[4]) == _output(jsons[2].cells[4])
-            @test _output(jsons[1].cells[6]) == _output(jsons[2].cells[6])
+    @test length(unique([_output(jsons[1].cells[i]) for i in [2, 4, 6]])) == 3
 
-            close!(server)
-        end
-    end
+    @test _output(jsons[1].cells[2]) == _output(jsons[2].cells[2])
+    @test _output(jsons[1].cells[4]) == _output(jsons[2].cells[4])
+    @test _output(jsons[1].cells[6]) == _output(jsons[2].cells[6])
+
+    close!(server)
 end