MB-9662:  remove google-perftools gperftools from COMPONENTS-GROMMIT
          trailing whitespace removed

Change-Id: I69bf236fb2d729b0446e7f39469da9df2f59e516
Reviewed-on: http://review.couchbase.org/30812
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>