revert skin trials (#3293)

## Description:

Skin trials has been a failure, very low fill rate and cause a major
drop in sales.

reverts 


https://github.com/openfrontio/OpenFrontIO/commit/97d0a05d58e926e3de4ba46d8dd14a04d60d6698

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

evan

src/core/ApiSchemas.ts

@@ -56,8 +56,6 @@ export const UserMeResponseSchema = z.object({
     publicId: z.string(),
     roles: z.string().array().optional(),
     flares: z.string().array().optional(),
-    flareExpiration: z.record(z.string(), z.number()).optional(),
-    tempFlaresCooldown: z.boolean(),
     achievements: z
       .array(
         z.object({