fix(ts): adapter interface (#8054)

packages/next-auth/src/adapters.ts

@@ -59,24 +59,7 @@ export interface VerificationToken {
  * [Adapters Overview](https://next-auth.js.org/adapters/overview) |
  * [Create a custom adapter](https://next-auth.js.org/tutorials/creating-a-database-adapter)
  */
-export type Adapter<WithVerificationToken = boolean> = DefaultAdapter &
-  (WithVerificationToken extends true
-    ? {
-        createVerificationToken: (
-          verificationToken: VerificationToken
-        ) => Awaitable<VerificationToken | null | undefined>
-        /**
-         * Return verification token from the database
-         * and delete it so it cannot be used again.
-         */
-        useVerificationToken: (params: {
-          identifier: string
-          token: string
-        }) => Awaitable<VerificationToken | null>
-      }
-    : {})
-
-export interface DefaultAdapter {
+export interface Adapter {
   createUser: (user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>
   getUser: (id: string) => Awaitable<AdapterUser | null>
   getUserByEmail: (email: string) => Awaitable<AdapterUser | null>