Fix some unused imports causing spotless check failures

Author: mbellade

hibernate-core/src/main/java/org/hibernate/boot/model/internal/ColumnsBuilder.java

@@ -15,7 +15,6 @@
 import org.hibernate.boot.models.annotations.internal.JoinColumnJpaAnnotation;
 import org.hibernate.boot.spi.MetadataBuildingContext;
 import org.hibernate.boot.spi.PropertyData;
-import org.hibernate.internal.util.collections.CollectionHelper;
 import org.hibernate.models.spi.MemberDetails;
 import org.hibernate.models.spi.SourceModelBuildingContext;
 

hibernate-core/src/main/java/org/hibernate/boot/model/internal/DelayedParameterizedTypeBean.java

@@ -7,7 +7,6 @@
 import java.util.Properties;
 
 import org.hibernate.boot.BootLogging;
-import org.hibernate.internal.util.collections.CollectionHelper;
 import org.hibernate.resource.beans.spi.ManagedBean;
 import org.hibernate.usertype.ParameterizedType;
 

hibernate-core/src/main/java/org/hibernate/boot/model/internal/DialectOverridesAnnotationHelper.java

@@ -14,7 +14,6 @@
 import org.hibernate.boot.models.annotations.spi.DialectOverrider;
 import org.hibernate.boot.spi.MetadataBuildingContext;
 import org.hibernate.dialect.Dialect;
-import org.hibernate.internal.util.collections.CollectionHelper;
 import org.hibernate.models.spi.AnnotationTarget;
 import org.hibernate.models.spi.SourceModelBuildingContext;
 

hibernate-core/src/main/java/org/hibernate/boot/model/internal/FilterDefBinder.java

@@ -17,7 +17,6 @@
 import org.hibernate.boot.spi.MetadataBuildingContext;
 import org.hibernate.engine.spi.FilterDefinition;
 import org.hibernate.internal.CoreMessageLogger;
-import org.hibernate.internal.util.collections.CollectionHelper;
 import org.hibernate.metamodel.mapping.JdbcMapping;
 import org.hibernate.models.spi.AnnotationTarget;
 import org.hibernate.models.spi.SourceModelBuildingContext;

hibernate-core/src/main/java/org/hibernate/boot/model/internal/QueryHintDefinition.java

@@ -4,7 +4,6 @@
  */
 package org.hibernate.boot.model.internal;
 
-import java.util.Collections;
 import java.util.Map;
 
 import org.hibernate.AnnotationException;
@@ -15,7 +14,6 @@
 import org.hibernate.MappingException;
 import org.hibernate.cfg.AvailableSettings;
 import org.hibernate.internal.util.LockModeConverter;
-import org.hibernate.internal.util.collections.CollectionHelper;
 import org.hibernate.internal.util.config.ConfigurationHelper;
 import org.hibernate.jpa.HibernateHints;
 import org.hibernate.jpa.LegacySpecHints;