Remove bitrotted example mod.

mods/example/mod.yaml

@@ -1,13 +0,0 @@
-Metadata:
-	Title: Example Mod
-	Description: Adds a soviet troop transport
-	Version: a0001
-	Author: The OpenRA Developers
-	Requires: ra
-
-Folders:
-	mods/example
-Rules:
-	mods/example/truk.yaml
-Sequences:
-	mods/example/sequences.yaml

mods/example/sequences.yaml

@@ -1,7 +0,0 @@
-truk:
-	idle:
-		Start: 0
-		Facings: 32
-	unload:
-		Start: 0
-		Facings: 32

mods/example/truk.yaml

@@ -1,25 +0,0 @@
-TRUK:
-	Inherits: ^Vehicle
-	Buildable:
-		Queue: Vehicle
-		BuildPaletteOrder: 50
-		Prerequisites: weap,barr
-		Owner: soviet
-	Valued:
-		Cost: 500
-	Tooltip:
-		Name: Supply Truck
-		Description: Light infantry transport.\n Weak vs Everything
-	Health:
-		HP: 200
-	Armor:
-		Type: Light
-	Mobile:
-		Speed: 12
-	RevealsShroud:
-		Range: 5
-	RenderUnit:
-	Cargo:
-		Types: Infantry
-		Passengers: 5
-		UnloadFacing: 220