ingestion: remove test dependency to erp5_ingestion_test

The dependency is that erp5_ingestion_test depends on erp5_ingestion,
erp5_ingestion has no reason to depend on erp5_ingestion_test.

bt5/erp5_ingestion/bt/test_dependency_list

 erp5_full_text_mroonga_catalog
 erp5_ingestion_mysql_innodb_catalog
-erp5_ingestion_test
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