revert hover

api.lua

@@ -2393,17 +2393,7 @@ function mob_class:do_states(dtime)
 			and self.animation
 			and self.animation.fly_start
 			and self.animation.fly_end then
-
-				local def = minetest.registered_nodes[self.standing_on] or {}
-
-				if def.walkable
-				and self.animation
-				and self.animation.hover_start
-				and self.animation.hover_end then
-					self:set_animation("hover")
-				else
-					self:set_animation("fly")
-				end
+				self:set_animation("fly")
 			else
 				self:set_animation("walk")
 			end

api.txt

@@ -237,8 +237,6 @@ functions needed for the mob to work properly which contains the following:
       'die_speed'
       'die_loop'     when set to false stops the animation looping.
       'die_rotate'   if true mob spins during death animation.
-      'hover_start"  hover animation when flying/swimming and solid node below
-      'hover_end"
 
       Using '_loop = false' setting will stop any of the above animations from
       looping.