fix: Cleans up LINQ calls. (#965)

- [X] Removes several `ToList()` uses with `PooledRefQueue`
- [X] Adds a `PeekRandom` to PooledRefQueue
- [X] Updates EV/BS so they dispel each other in a more efficient manner.
- [X] Fixes Firebomb so it works like a normal firefield.
- [X] Fixes field spells so they aren't unnecessarily using a Point3D ref more than necessary.
- [X] Removes extra allocation in campfire by using reverse loop.
- [X] Removes other LINQ calls that aren't needed.

Projects/UOContent/Skills/SpiritSpeak.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Linq;
 using Server.Items;
 using Server.Network;
 using Server.Spells;
@@ -134,7 +133,15 @@ namespace Server.SkillHandlers
             public override void OnCast()
             {
                 var eable = Caster.GetItemsInRange<Corpse>(3);
-                var toChannel = eable.FirstOrDefault(corpse => !corpse.Channeled);
+                Corpse toChannel = null;
+                foreach (var corpse in eable)
+                {
+                    if (!corpse.Channeled)
+                    {
+                        toChannel = corpse;
+                        break;
+                    }
+                }
                 eable.Free();
 
                 var min = 1 + (int)(Caster.Skills.SpiritSpeak.Value * 0.25);

Projects/UOContent/Skills/Tracking/Tracking.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Server.Gumps;
 using Server.Mobiles;
 using Server.Network;
@@ -210,13 +209,18 @@ namespace Server.SkillHandlers
 
             var range = 10 + (int)(from.Skills.Tracking.Value / 10);
 
-            var list = from.GetMobilesInRange(range)
-                .Where(
-                    m => m != from && (!Core.AOS || m.Alive) &&
-                         (!m.Hidden || m.AccessLevel == AccessLevel.Player || from.AccessLevel > m.AccessLevel) &&
-                         check(m) && CheckDifficulty(from, m)
-                )
-                .ToList();
+            var eable = from.GetMobilesInRange(range);
+            var list = new List<Mobile>();
+            foreach (var m in eable)
+            {
+                if (m != from && (!Core.AOS || m.Alive) &&
+                    (!m.Hidden || m.AccessLevel == AccessLevel.Player || from.AccessLevel > m.AccessLevel) &&
+                    check(m) && CheckDifficulty(from, m))
+                {
+                    list.Add(m);
+                }
+            }
+            eable.Free();
 
             if (list.Count > 0)
             {