Revert "Disable thinLTO for libhwbinder for riscv"

This reverts commit 0747671564e71304240aa7f2f2512466abe0695f.

The build no longer fails with ThinLTO, the workaround can be removed.

Test: presubmit
Bug: 254713216
Change-Id: I6144ecb5f5e8f465d4709bf0f90114ddc624fca8
1 file changed