Dropped obsolete Debug Bundle DebugTemplate class #1759

Job	Run time
Run code style check (8.0)	2m 32s
Solr integration tests (7.4)	10m 10s
Solr integration tests (8.0)	9m 42s
Unit tests & SQLite integration tests (7.4)	6m 36s
Solr integration tests (8.1)	9m 42s
Unit tests & SQLite integration tests (8.0)	6m 46s
Unit tests & SQLite integration tests (8.1)	6m 31s
MySQL integration tests (7.4)	13m 10s
PostgreSQL integration tests (7.4)	22m 20s
MySQL integration tests (8.0)	14m 28s
PostgreSQL integration tests (8.0)	23m 21s
MySQL integration tests (8.1)	12m 55s
PostgreSQL integration tests (8.1)	23m 41s
	2h 41m 54s

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