To get to the move deleter's house you must go to lilycove city. Go up and left and you should see a house next to a sign. Then enter the house.
in lilycove city near the giant pokemart.
The house that is downward of the Pokemon center in Canalave city
Next to pokemon center in fuchsia city i believe
fly to lilycove on emerald and go into the move deleters house and ask him to make rayquaza forget fly
You goto the move deleter. The move deleters house is in Canalave City
The move deleters house in blackthorn city
Go to Fushia City (Town with Safari.) Next to the Pokemon Center there is a small house. Go inside and talk to the old man. He will ask you which Pokemon needs a move deleted and what move.
Go to fuschia city head to the Pokemon center and look to the left of the Pokemon center there are 2 houses and a gym the first house to the left of the Pokemon center is the move deleters house.
I have not played it in a long time but in one city there is a house called the move deleters house-he deletes your moves (i THINK hes in lilycove) the old mans house is besid the big store in lilycove Hope it helped :)
The Move Deleter in Pokemon Ruby will help Pokemon forget learned moves, including HMs which cannot be forgotten any other way. The Move Deleter lives in a house east of the Lilycove Department Store.
Go to fuschia city and go to the Pokemon center but don't enter instead look to your left there are 2 houses and a gym the first house to the left of the Pokemon center is the move deleters house.
go to lilycove and move deleter's house is near ocean