git: openjdk/leyden: premain: Remove unused compilation stats

[duke]

Changeset: 1e0be02f
Branch: premain
Author:    Igor Veresov <igor.veresov at oracle.com>
Date:      2025-01-08 04:14:13 +0000
URL:       https://git.openjdk.org/leyden/commit/1e0be02f1bf4c8e8782e28b73f3189e2bc17413a

Remove unused compilation stats

! src/hotspot/share/compiler/compileBroker.cpp
! src/hotspot/share/oops/trainingData.cpp
! src/hotspot/share/oops/trainingData.hpp