Don't pass in oat file name to NativeLocationInImage

Don't pass in oat file name to NativeLocationInImage

We already have the oat file name stored in the relocation, using
the one passed in for the image info can cause a mismatch.

I suspect this fixes a bug repated to copied methods where there
was a oat file name mismatch. When we assign the native object
relocation for the methods of a class, we use the dex cache from
that class.

However, we use method's declaring class in NativeLocationVisitor
by using ArtMethod::GetDexCache. This could result in using the
wrong ImageInfo if the declaring class is in another image.

Change-Id: I753207f7b773fac182f84ba57c640c09f9ce911f