hg: jdk/sandbox: remove redundant scope

[markus.gronlund at oracle.com]

Changeset: e1b896faca1c
Author:    mgronlun
Date:      2019-09-17 12:06 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/e1b896faca1c

remove redundant scope

! src/hotspot/share/jfr/periodic/jfrPeriodic.cpp