Revert "sched/core: Fix use after free issue in is_sched_lib_based_app()"

This reverts commit 0e6ca164.

Bug:133481659
Test: build
Change-Id: Ie6a0b5e46386c98882614be19dedc61ffd3870e5
Signed-off-by: Wei Wang <wvw@google.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>