git: openjdk/jdk: 8253392: remove PhaseCCP_DCE declaration

[Paul Hohensee]

Changeset: 426c9049
Author:    Xin Liu <xliu at openjdk.org>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2020-09-22 20:24:05 +0000
URL:       https://git.openjdk.java.net/jdk/commit/426c9049

8253392: remove PhaseCCP_DCE declaration

remove the deprecated declaration PhaseCCP_DCE

Reviewed-by: neliasso, phh

! src/hotspot/share/opto/compile.hpp