Revert "Mesh gossip (#381)" (#394)

This reverts commit 0969c0641e.

app/src/main/java/com/bitchat/android/mesh/BluetoothPacketBroadcaster.kt

@@ -159,46 +159,6 @@ class BluetoothPacketBroadcaster(
             }
         }
     }
-
-    /**
-     * Targeted send to a specific peer (by peerID) if directly connected.
-     * Returns true if sent to at least one matching connection.
-     */
-    fun sendToPeer(
-        targetPeerID: String,
-        routed: RoutedPacket,
-        gattServer: BluetoothGattServer?,
-        characteristic: BluetoothGattCharacteristic?
-    ): Boolean {
-        val packet = routed.packet
-        val data = packet.toBinaryData() ?: return false
-        val typeName = MessageType.fromValue(packet.type)?.name ?: packet.type.toString()
-        val senderPeerID = routed.peerID ?: packet.senderID.toHexString()
-        val incomingAddr = routed.relayAddress
-        val incomingPeer = incomingAddr?.let { connectionTracker.addressPeerMap[it] }
-        val senderNick = senderPeerID.let { pid -> nicknameResolver?.invoke(pid) }
-
-        // Try server-side connections first
-        val targetDevice = connectionTracker.getSubscribedDevices()
-            .firstOrNull { connectionTracker.addressPeerMap[it.address] == targetPeerID }
-        if (targetDevice != null) {
-            if (notifyDevice(targetDevice, data, gattServer, characteristic)) {
-                logPacketRelay(typeName, senderPeerID, senderNick, incomingPeer, incomingAddr, targetPeerID, targetDevice.address, packet.ttl)
-                return true
-            }
-        }
-
-        // Try client-side connections next
-        val targetConn = connectionTracker.getConnectedDevices().values
-            .firstOrNull { connectionTracker.addressPeerMap[it.device.address] == targetPeerID }
-        if (targetConn != null) {
-            if (writeToDeviceConn(targetConn, data)) {
-                logPacketRelay(typeName, senderPeerID, senderNick, incomingPeer, incomingAddr, targetPeerID, targetConn.device.address, packet.ttl)
-                return true
-            }
-        }
-        return false
-    }
     
     /**
      * Internal broadcast implementation - runs in serialized actor context