Remove FilterHiddenStateEventsProcessor

The same process is already done by the Rust SDK, so it's now redundant.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/EventContent.kt

@@ -85,11 +85,7 @@ data class ProfileChangeContent(
 data class StateContent(
     val stateKey: String,
     val content: OtherState
-) : EventContent {
-    fun isVisibleInTimeline(): Boolean {
-        return content.isVisibleInTimeline()
-    }
-}
+) : EventContent
 
 data class FailedToParseMessageLikeContent(
     val eventType: String,

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/OtherState.kt

@@ -41,30 +41,4 @@ sealed interface OtherState {
     data object SpaceChild : OtherState
     data object SpaceParent : OtherState
     data class Custom(val eventType: String) : OtherState
-
-    fun isVisibleInTimeline() = when (this) {
-        // Visible
-        is RoomAvatar,
-        is RoomName,
-        is RoomTopic,
-        is RoomThirdPartyInvite,
-        is RoomCreate,
-        is RoomEncryption,
-        is Custom -> true
-        // Hidden
-        is RoomAliases,
-        is RoomCanonicalAlias,
-        is RoomGuestAccess,
-        is RoomHistoryVisibility,
-        is RoomJoinRules,
-        is RoomPinnedEvents,
-        is RoomPowerLevels,
-        is RoomServerAcl,
-        is RoomTombstone,
-        is SpaceChild,
-        is SpaceParent,
-        is PolicyRuleRoom,
-        is PolicyRuleServer,
-        is PolicyRuleUser -> false
-    }
 }