Apply suggestions from code review

Author: trask

instrumentation/kafka/kafka-clients/kafka-clients-2.6/library/src/main/java/io/opentelemetry/instrumentation/kafkaclients/v2_6/internal/OpenTelemetryConsumerInterceptor.java

@@ -63,11 +63,6 @@ public void configure(Map<String, ?> configs) {
     consumerGroup = Objects.toString(configs.get(ConsumerConfig.GROUP_ID_CONFIG), null);
     clientId = Objects.toString(configs.get(ConsumerConfig.CLIENT_ID_CONFIG), null);
 
-    Object telemetrySupplier = configs.get(CONFIG_KEY_KAFKA_TELEMETRY_SUPPLIER);
-    if (telemetrySupplier == null) {
-      return;
-    }
-
     KafkaTelemetrySupplier supplier =
         getProperty(configs, CONFIG_KEY_KAFKA_TELEMETRY_SUPPLIER, KafkaTelemetrySupplier.class);
     this.telemetry = supplier.get();

instrumentation/kafka/kafka-clients/kafka-clients-2.6/library/src/main/java/io/opentelemetry/instrumentation/kafkaclients/v2_6/internal/OpenTelemetryProducerInterceptor.java

@@ -48,11 +48,6 @@ public void close() {}
   public void configure(Map<String, ?> configs) {
     clientId = Objects.toString(configs.get(ProducerConfig.CLIENT_ID_CONFIG), null);
 
-    Object telemetrySupplier = configs.get(CONFIG_KEY_KAFKA_TELEMETRY_SUPPLIER);
-    if (telemetrySupplier == null) {
-      return;
-    }
-
     KafkaTelemetrySupplier supplier =
         getProperty(configs, CONFIG_KEY_KAFKA_TELEMETRY_SUPPLIER, KafkaTelemetrySupplier.class);
     this.telemetry = supplier.get();