Change ToRawPointers method call to MakeNonOwningPointerVector in reporter.cc

This CL removes the code for the ToRawPointers method previously
introduced in libartbase/base/utils.h, as an equivalent
MakeNonOwningPointerVector method exists in libartbase/base/stl_util.h

Bug: 246330418
Test: atest ArtGtestsTargetChroot
Merged-In: Ie412542e014899d50a47a6375b730c70211c6c26
Merged-In: I06aa2d733e5ee5bd00429b6dff585394bcc807d0
Change-Id: Ia1920bf503f5de1d278ee75dc03fa0d7265fad08
2 files changed