Remove more LINQ

src/FactorioTools/OilField/Steps/AddElectricPoles.cs

@@ -86,12 +86,33 @@ private static void RemoveExtraElectricPoles(Context context, List<ProviderRecip
     {
         (var poleCenterToCoveredCenters, var coveredCenterToPoleCenters) = GetElectricPoleCoverage(context, poweredEntities, electricPoles.Keys);
 
-        var removeCandidates = coveredCenterToPoleCenters
-            .EnumeratePairs()
-            .Where(p => p.Value.Count > 2) // Consider electric poles covering pumpjacks that are covered by at least one other electric pole.
-            .SelectMany(p => p.Value.EnumerateItems())
-            .Concat(poleCenterToCoveredCenters.EnumeratePairs().Where(p => p.Value.Count == 0).Select(p => p.Key)) // Consider electric poles not covering any pumpjack.
-            .ExceptSet(coveredCenterToPoleCenters.EnumeratePairs().Where(p => p.Value.Count == 1).SelectMany(p => p.Value.EnumerateItems()), context, allowEnumerate: true); // Exclude electric poles covering pumpjacks that are only covered by one pole.
+        var removeCandidates = context.GetLocationSet(allowEnumerate: true);
+
+        foreach (var p in coveredCenterToPoleCenters.EnumeratePairs())
+        {
+            // Consider electric poles covering pumpjacks that are covered by at least one other electric pole.
+            if (p.Value.Count > 2)
+            {
+                removeCandidates.UnionWith(p.Value);
+            }
+        }
+
+        foreach (var pair in poleCenterToCoveredCenters.EnumeratePairs())
+        {
+            if (pair.Value.Count == 0)
+            {
+                removeCandidates.Add(pair.Key);
+            }
+        }
+
+        foreach (var p in coveredCenterToPoleCenters.EnumeratePairs())
+        {
+            // Consider electric poles covering pumpjacks that are covered by at least one other electric pole.
+            if (p.Value.Count == 1)
+            {
+                removeCandidates.ExceptWith(p.Value);
+            }
+        }
 
         while (removeCandidates.Count > 0)
         {