MB-35655: Disable DelVBucket race test on Windows + Magma
MB-35655: Disable DelVBucket race test on Windows + Magma

The test is currently failing often when run against magma on
Windows.

Change-Id: If321c3b022ab89b6823a733f9435c24799662109
Reviewed-on: http://review.couchbase.org/113708
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