[FIX] core: remove duplicate test reporting

Leftover from testing a post-load report of all test failures.

Intent was to provide test failure details either during or after
loading, but feature was not actually developed and I forgot to remove
this bit before merging.

closes odoo/odoo#56186

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

odoo/service/server.py

@@ -520,8 +520,6 @@ class ThreadedServer(CommonServer):
                          else logger.warning if not report.testsRun \
                          else logger.info
                         log("%s when loading database %r", report, db)
-                        for test, traceback in chain(report.failures, report.errors):
-                            log("%s\n%s", report.getDescription(test), traceback)
             self.stop()
             return rc