elf32-nds32: Remove elf32_nds32_allocate_dynrelocs

elf32-nds32: Remove elf32_nds32_allocate_dynrelocs

It is unused, removing it fixes this error when building with clang:

    /home/emaisin/src/binutils-gdb/bfd/elf32-nds32.c:3172:1: error: unused function 'elf32_nds32_allocate_dynrelocs' [-Werror,-Wunused-function]
    elf32_nds32_allocate_dynrelocs (struct bfd_link_info *info, asection *sreloc,
    ^
    1 error generated.

gcc only reports the error if you remove "inline".  I don't know if this
is actually a mistake and it should actually be used though.

gdb/ChangeLog:

	* elf32-nds32.c (elf32_nds32_allocate_dynrelocs): Remove.