[llvm-objdump] - Remove one overload of reportError. NFCI.

There is a problem with reportError we have.
Declaration says we have ArchiveName
that follows the FileName:

reportError(Error E, StringRef FileName, StringRef ArchiveName,...

Though implementation have them reversed. I cleaned it up and
removed an excessive reportError(Error E, StringRef File) version.

Rebased on top of D66418.

Differential revision: https://reviews.llvm.org/D66517

llvm-svn: 370034