Reduced Warning Count By 130 For Full Rebuilds (#26518)

* remove deprecated entity coordinate extension functions. Reduces warning count by approximately 50

* final toCoords Removed

* Remove all unused variables and dead code paths

* remove always true variable, should be a cvar or something instead

* remove superfluous variables from tests

Content.Shared/RCD/Systems/RCDSystem.cs

@@ -25,7 +25,6 @@ namespace Content.Shared.RCD.Systems;
 public sealed class RCDSystem : EntitySystem
 {
     [Dependency] private readonly IGameTiming _timing = default!;
-    [Dependency] private readonly IMapManager _mapMan = default!;
     [Dependency] private readonly INetManager _net = default!;
     [Dependency] private readonly ISharedAdminLogManager _adminLogger = default!;
     [Dependency] private readonly ITileDefinitionManager _tileDefMan = default!;
@@ -39,7 +38,7 @@ public sealed class RCDSystem : EntitySystem
     [Dependency] private readonly TurfSystem _turf = default!;
     [Dependency] private readonly IGameTiming _gameTiming = default!;
 
-    private readonly int RcdModeCount = Enum.GetValues(typeof(RcdMode)).Length;
+    private readonly int _rcdModeCount = Enum.GetValues(typeof(RcdMode)).Length;
 
     public override void Initialize()
     {
@@ -310,7 +309,7 @@ public sealed class RCDSystem : EntitySystem
         _audio.PlayPredicted(comp.SwapModeSound, uid, user);
 
         var mode = (int) comp.Mode;
-        mode = ++mode % RcdModeCount;
+        mode = ++mode % _rcdModeCount;
         comp.Mode = (RcdMode) mode;
         Dirty(uid, comp);