Remove unused import

Author: onobc

spring-cloud-dataflow-apps-plugin/spring-cloud-dataflow-apps-metadata-plugin/src/test/java/org/springframework/cloud/dataflow/app/plugin/OptionGroupsTest.java

@@ -32,7 +32,6 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
-import static org.springframework.cloud.dataflow.app.plugin.MetadataAggregationMojo.CONFIGURATION_PROPERTIES_INBOUND_PORTS;
 import static org.springframework.cloud.dataflow.app.plugin.MetadataAggregationMojo.SPRING_CLOUD_DATAFLOW_OPTION_GROUPS_PROPERTIES;
 
 /**