Revert "neo4j: add driver-class-name for jdbc"

This reverts commit 0376c759108052e3ac76165357075ffdaab47f29.

Author: mshima

generators/spring-boot/templates/src/main/resources/config/application.yml.ejs

@@ -281,11 +281,6 @@ spring:
           group: <%= dasherizedBaseName %>
   <%_ } _%>
 <%_ } _%>
-<%_ if (databaseMigrationLiquibase && databaseTypeNeo4j) { -%>
-  datasource:
-    type:
-      driver-class-name: org.neo4j.jdbc.Neo4jDriver
-<%_ } _%>
 <%_ if ('dockerServices' in locals && dockerServices?.length) { _%>
   docker:
     compose: