Fixed Two-Way Lever Sprites (#37390)

* New conveyor sprites - arrows!

* Revert "New conveyor sprites - arrows!"

This reverts commit 3b540be0d89d93af5028a9ae6533bbdf2954cb75.

* Reworked to only be the lever sprite update.

---------

Co-authored-by: RedBookcase <Usualmoves@gmail.com>

Resources/Textures/Structures/conveyor.rsi/meta.json

@@ -1,7 +1,7 @@
 {
   "version": 1,
   "license": "CC-BY-SA-3.0",
-  "copyright": "Taken from tgstation at commit https://github.com/tgstation/tgstation/commit/c6e3401f2e7e1e55c57060cdf956a98ef1fefc24 and modified by Swept",
+  "copyright": "Taken from tgstation at commit https://github.com/tgstation/tgstation/commit/c6e3401f2e7e1e55c57060cdf956a98ef1fefc24 and modified by Swept, switch-fwd and switch-rev modified by RedBookcase (Github)",
   "size": {
     "x": 32,
     "y": 32
@@ -234,12 +234,6 @@
       "name": "conveyor_stopped_cw",
       "directions": 8
     },
-    {
-      "name": "greenlight"
-    },
-    {
-      "name": "redlight"
-    },
     {
       "name": "switch"
     },