MB-32385: Remove test_bug2509
MB-32385: Remove test_bug2509

Removing test_bug2509 (ep_testsuite_basic:'retain rowid over a soft
delete') as it's use of usleep is undesirable and it is testing an
8 year old change that does not exist in the current code.

Change-Id: I2e0bb322b266014cd2a97e8027d066ee5ade674c
Reviewed-on: http://review.couchbase.org/103242
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine