sparc/erc32: Simplify bsp_specs

Updates #3520.

c/src/lib/libbsp/sparc/erc32/bsp_specs

@@ -1,13 +1,9 @@
 %rename endfile old_endfile
 %rename startfile old_startfile
-%rename link old_link
 
 *startfile:
 %{!qrtems: %(old_startfile)} \
 %{!nostdlib: %{qrtems: crti.o%s crtbegin.o%s}}
 
-*link:
-%{!qrtems: %(old_link)} %{qrtems: -dc -dp -N}
-
 *endfile:
 %{!qrtems: %(old_endfile)} %{qrtems: crtend.o%s crtn.o%s}