This patch removes a workaround recently installed in objcopy that
avoided removing duplicated notes in targets for which the number of
internal relocations may be bigger than the number of external
relocations.  With the recent fixes in sparc64 and mips64, this
workaround is no longer necessary.

2017-05-19  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* objcopy.c (merge_gnu_build_notes): Remove workaround that
	prevented deleting relocations in duplicated notes in mips64 and
	sparc.