git: openjdk/jdk: 8323284: Remove unused FilteringClosure declaration

[Albert Mingkun Yang]

Changeset: 438ab7c1
Author:    Albert Mingkun Yang <ayang at openjdk.org>
Date:      2024-01-09 14:23:42 +0000
URL:       https://git.openjdk.org/jdk/commit/438ab7c115249d7501edfbb2d3c62e96ae824181

8323284: Remove unused FilteringClosure declaration

Reviewed-by: stefank, tschatzl

! src/hotspot/share/gc/shared/space.hpp
! src/hotspot/share/oops/oop.hpp