Remove unused code

Author: bmarty

vector/src/main/java/im/vector/app/features/home/room/detail/composer/MessageComposerViewEvents.kt

@@ -16,7 +16,6 @@
 
 package im.vector.app.features.home.room.detail.composer
 
-import androidx.annotation.StringRes
 import im.vector.app.core.platform.VectorViewEvents
 import im.vector.app.features.command.Command
 import im.vector.app.features.command.ParsedCommand
@@ -34,7 +33,6 @@ sealed class MessageComposerViewEvents : VectorViewEvents {
     data class SlashCommandError(val command: Command) : SendMessageResult()
     data class SlashCommandUnknown(val command: String) : SendMessageResult()
     data class SlashCommandNotSupportedInThreads(val command: Command) : SendMessageResult()
-    data class SlashCommandHandled(@StringRes val messageRes: Int? = null) : SendMessageResult()
     object SlashCommandLoading : SendMessageResult()
     data class SlashCommandResultOk(val parsedCommand: ParsedCommand) : SendMessageResult()
     data class SlashCommandResultError(val throwable: Throwable) : SendMessageResult()