[LLD][ELF] - Remove dead code from handleTlsRelocation. NFC.
[LLD][ELF] - Remove dead code from handleTlsRelocation. NFC.

Code is dead because R_TLSDESC_CALL is already handled in the
following block of the code:
https://github.com/llvm-mirror/lld/blob/master/ELF/Relocations.cpp#L231

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@339566 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld