lm32: duplicate create_got_section

lm32_elf_create_dynamic_sections has two calls to
_bfd_elf_create_got_section.  That doesn't cause a problem, but one
such call suffices.

	* elf32-lm32.c (lm32_elf_create_dynamic_sections): Remove
	one _bfd_elf_create_got_section call.