API modules do not need to setup dependency injection.

Move the implementation to the impl modules.

libraries/recentemojis/api/build.gradle.kts

@@ -1,5 +1,3 @@
-import extension.setupDependencyInjection
-
 /*
  * Copyright (c) 2025 Element Creations Ltd.
  * Copyright 2025 New Vector Ltd.
@@ -16,8 +14,6 @@ android {
     namespace = "io.element.android.libraries.recentemojis.api"
 }
 
-setupDependencyInjection()
-
 dependencies {
     implementation(projects.libraries.architecture)
     implementation(projects.libraries.matrix.api)

libraries/recentemojis/api/src/main/kotlin/io/element/android/libraries/recentemojis/api/AddRecentEmoji.kt

@@ -8,17 +8,6 @@
 
 package io.element.android.libraries.recentemojis.api
 
-import dev.zacsweers.metro.Inject
-import io.element.android.libraries.core.coroutine.CoroutineDispatchers
-import io.element.android.libraries.matrix.api.MatrixClient
-import kotlinx.coroutines.withContext
-
-@Inject
-class AddRecentEmoji(
-    private val client: MatrixClient,
-    private val dispatchers: CoroutineDispatchers,
-) {
-    suspend operator fun invoke(emoji: String): Result<Unit> = withContext(dispatchers.io) {
-        client.addRecentEmoji(emoji)
-    }
+fun interface AddRecentEmoji {
+    suspend operator fun invoke(emoji: String): Result<Unit>
 }