git: openjdk/leyden: premain: Cleanup. Remove unused code.

[duke]

Changeset: 415045e9
Branch: premain
Author:    Igor Veresov <igor.veresov at oracle.com>
Date:      2025-03-15 22:06:07 +0000
URL:       https://git.openjdk.org/leyden/commit/415045e94ff2c456b3b5aa1d7bc9685aa14fc052

Cleanup. Remove unused code.

! src/hotspot/share/memory/allocation.hpp
! src/hotspot/share/oops/instanceKlass.cpp
! src/hotspot/share/oops/klass.inline.hpp
! src/hotspot/share/oops/trainingData.hpp