Remove duplication of relocation names in lib/Object/ELFYAML.cpp
Remove duplication of relocation names in lib/Object/ELFYAML.cpp

We can now use the ELF relocation .def files to create the mapping
of relocation numbers to names and avoid having to duplicate the
list of relocations.

Patch by Will Newton.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@222567 91177308-0d34-0410-b5e6-96231b3b80d8

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