feat: delete karts when PIXEL UI isn't installed

Author: TomDotBat

lua/entities/pixel_kart.lua

@@ -17,6 +17,11 @@ AccessorFunc(ENT, "pPIXELKartOwner", "PIXELKartOwner")
 function ENT:Initialize()
     self:SetModel("models/freeman/vehicles/electric_go-kart.mdl")
 
+    if not PIXEL.UI then
+        SafeRemoveEntityDelayed(self, 0)
+        return
+    end
+
     if CLIENT then return end
 
     local owner = self:GetPIXELKartOwner()

lua/entities/pixel_karts_repair_wrench.lua

@@ -13,6 +13,12 @@ ENT.AdminOnly = false
 if SERVER then
     function ENT:Initialize()
         self:SetModel("models/mark2580/gtav/garage_stuff/span_02.mdl")
+
+        if not PIXEL.UI then
+            SafeRemoveEntityDelayed(self, 0)
+            return
+        end
+
         self:PhysicsInit(SOLID_VPHYSICS)
         self:SetMoveType(MOVETYPE_VPHYSICS)
         self:SetSolid(SOLID_VPHYSICS)