remove a terrain rule from test-scenario

Probably broken since a long-time, used a directory instead of an image

data/scenario-test.cfg

@@ -1588,26 +1588,6 @@ For game purposes, the races group into factions; for example, orcs often cooper
         [/unit]
     [/event]
 
-    [terrain_graphics]
-        x,y=13,13
-        map="
-, *
-*,  *
-, 1
-*,  *
-, *"
-
-        [tile]
-            pos=1
-            type=*
-        [/tile]
-        [image]
-            name="forest"
-            position=vertical
-            base=90,144
-        [/image]
-    [/terrain_graphics]
-
     [label]
         x,y=15,15
         text="This is not a forest"