Remove deprecated handleUpdate from ThingHandler (#8558)

The handleUpdate method was deprecated when profiles were introduced (see eclipse-archived/smarthome#4108).
Instead the "follow profile" can be used which forwards item updates as commands to handlers.
This profile works with any binding instead of only those that implement the handleUpdate method.

Related to openhab/openhab-core#1669

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.phc/src/main/java/org/openhab/binding/phc/internal/handler/PHCHandler.java

@@ -20,7 +20,6 @@ import java.util.Map;
 import java.util.Map.Entry;
 
 import org.openhab.core.config.core.Configuration;
-import org.openhab.core.library.types.DecimalType;
 import org.openhab.core.library.types.OnOffType;
 import org.openhab.core.library.types.PercentType;
 import org.openhab.core.library.types.StopMoveType;
@@ -125,14 +124,6 @@ public class PHCHandler extends BaseThingHandler {
         }
     }
 
-    @Override
-    public void handleUpdate(ChannelUID channelUID, State newState) {
-        if (CHANNELS_JRM_TIME.equals(channelUID.getGroupId())) {
-            times[Integer
-                    .parseInt(channelUID.getIdWithoutGroup())] = (short) (((DecimalType) newState).floatValue() * 10);
-        }
-    }
-
     @Override
     public void handleConfigurationUpdate(Map<String, Object> configurationParameters) {
         if (isInitialized()) { // prevents change of address