Revert "_bfd_mips_elf_final_link: Notify user about wrong .reginfo size"

Revert "_bfd_mips_elf_final_link: Notify user about wrong .reginfo size"

Revert commit 58807c48a5a3 ("_bfd_mips_elf_final_link: Notify user about
wrong .reginfo size") now that the size of the `.reginfo' section has
been truly fixed in `_bfd_mips_elf_section_processing', meaning that the
offending condition can be asserted again.

	bfd/
	Revert
	2018-01-12  Vlad Ivanov  <vlad@ivanov.email>

	* elfxx-mips.c (_bfd_mips_elf_final_link): Notify user when
	.reginfo section has wrong size.