fix flowcutter tests

Author: samuelsonric

test/core.jl

@@ -80,15 +80,12 @@ function CliqueTrees.permutation(graph, alg::SafeFlowCutter)
     time = alg.time
     seed = alg.seed
 
-    for i in 1:4
-        try
-            return permutation(graph, FlowCutter(; time, seed))
-        catch
-            @warn "FlowCutter failed (attempt $i)."
-        end
+    try
+        return permutation(graph, FlowCutter(; time, seed))
+    catch
+        @warn "FlowCutter failed"
+        return permutation(graph)
     end
-
-    return permutation(graph, FlowCutter(; time, seed))
 end
 
 @testset "errors" begin