Removes unnecessary spec in Channel

amethyst/src/main/java/com/vitorpamplona/amethyst/model/Channel.kt

@@ -85,8 +85,6 @@ abstract class Channel {
         notes.remove(note.idHex)
     }
 
-    abstract fun anyNameStartsWith(prefix: String): Boolean
-
     fun pruneOldMessages(): Set<Note> {
         val important =
             notes

amethyst/src/main/java/com/vitorpamplona/amethyst/model/emphChat/EphemeralChatChannel.kt

@@ -32,5 +32,5 @@ class EphemeralChatChannel(
 
     override fun toBestDisplayName() = roomId.toDisplayKey()
 
-    override fun anyNameStartsWith(prefix: String): Boolean = roomId.id.contains(prefix, true)
+    fun anyNameStartsWith(prefix: String): Boolean = roomId.id.contains(prefix, true)
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/model/nip28PublicChats/PublicChatChannel.kt

@@ -94,7 +94,7 @@ class PublicChatChannel(
         return info.picture ?: creator?.info?.banner
     }
 
-    override fun anyNameStartsWith(prefix: String): Boolean =
+    fun anyNameStartsWith(prefix: String): Boolean =
         idHex.startsWith(prefix) ||
             info.name?.contains(prefix, true) == true ||
             info.about?.contains(prefix, true) == true

amethyst/src/main/java/com/vitorpamplona/amethyst/model/nip53LiveActivities/LiveActivitiesChannel.kt

@@ -61,7 +61,7 @@ class LiveActivitiesChannel(
 
     fun profilePicture(): String? = info?.image()?.ifBlank { null }
 
-    override fun anyNameStartsWith(prefix: String): Boolean =
+    fun anyNameStartsWith(prefix: String): Boolean =
         info?.title()?.contains(prefix, true) == true ||
             info?.summary()?.contains(prefix, true) == true