chore: adapt to new changetemplate (#3)

Author: davidfrigolet

src/main/java/io/flamingock/template/sql/SqlTemplate.java

@@ -17,7 +17,7 @@
 
 import io.flamingock.api.annotations.Apply;
 import io.flamingock.api.annotations.Rollback;
-import io.flamingock.api.template.AbstractSimpleTemplate;
+import io.flamingock.api.template.AbstractChangeTemplate;
 import io.flamingock.internal.util.log.FlamingockLoggerFactory;
 import io.flamingock.template.sql.util.SqlSplitterFactory;
 import io.flamingock.template.sql.util.SqlStatement;
@@ -30,7 +30,7 @@
 import java.util.Collections;
 import java.util.List;
 
-public class SqlTemplate extends AbstractSimpleTemplate<SqlTemplateConfig, String, String> {
+public class SqlTemplate extends AbstractChangeTemplate<SqlTemplateConfig, String, String> {
 
     private static final Logger logger = FlamingockLoggerFactory.getLogger(SqlTemplate.class);
 
@@ -40,13 +40,11 @@ public SqlTemplate() {
 
     @Apply
     public void apply(Connection connection) {
-        String applyPayload = getApply();
         execute(connection, applyPayload);
     }
 
     @Rollback
     public void rollback(Connection connection) {
-        String rollbackPayload = getRollback();
         if (rollbackPayload != null && !rollbackPayload.trim().isEmpty()) {
             execute(connection, rollbackPayload);
         }