(svn r20631) -Codechange: generalise IsIndustryTileOnWater + simplify so related code

src/industry_map.h

@@ -156,17 +156,6 @@ static inline void SetIndustryGfx(TileIndex t, IndustryGfx gfx)
 	SB(_m[t].m6, 2, 1, GB(gfx, 8, 1));
 }
 
-/**
- * Tests if the industry tile was built on water.
- * @param t the industry tile
- * @return true iff on water
- */
-static inline bool IsIndustryTileOnWater(TileIndex t)
-{
-	assert(IsTileType(t, MP_INDUSTRY));
-	return (GetWaterClass(t) != WATER_CLASS_INVALID);
-}
-
 /**
  * Returns this indutry tile's construction counter value
  * @param tile the tile to query