Remove Room moderation feature flag (#2678)

* Remove the feature flag

* Add changelog

* Increase login timeout for Maestro

libraries/featureflag/api/src/main/kotlin/io/element/android/libraries/featureflag/api/FeatureFlags.kt

@@ -82,13 +82,6 @@ enum class FeatureFlags(
         defaultValue = true,
         isFinished = false,
     ),
-    RoomModeration(
-        key = "feature.roomModeration",
-        title = "Room moderation",
-        description = "Add moderation features to the room for users with permissions",
-        defaultValue = true,
-        isFinished = false,
-    ),
     RoomDirectorySearch(
         key = "feature.roomdirectorysearch",
         title = "Room directory search",