diff --git a/extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/SubscriptionManager.java b/extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/SubscriptionManager.java
index ea7a185..8788f3e 100644
@@ -15,7 +15,6 @@
*/
package org.thingsboard.server.extensions.core.plugin.telemetry;
-import com.sun.javafx.collections.MappingChange;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import org.thingsboard.server.common.data.DataConstants;