What I do on projects if I want to cut down on excess I don't need/use, is
- I go to the graphics folder, and delete any and all files in the Titles 1 and 2 folders that I'm not using. (no need to have 10 pictures there when you just use one)
- I remove any parallaxes I don't use. Those are also large images that take up space.
- I don't believe your game uses battles? If so delete any and all animations that you -Are NOT Using In Events For Special Effects- they can take up a -lot-.
- If you really want to cut corners, delete any fonts in the font folder that you aren't using. I do believe everyone is able to see VL Gothic without it having to be in the font folder , but I'm not 100% sure.
- And any music in the audio folder you don't use, you should probably toss that as well. I don't believe it affects the game if it isn't even played in it.
Those are my personal ideas, though. If they help, then great. xD