remove landuse=industrial default (#557)

Most hydroplants are mapped as buildings (due to their small size) and adding landuse=industrial would be wrong.

Author: Hiausirg

data/presets/power/plant/source/hydro.json

@@ -15,7 +15,6 @@
     },
     "addTags": {
         "power": "plant",
-        "landuse": "industrial",
         "plant:source": "hydro",
         "plant:output:electricity": "*"
     },