Revert "libgcc-initial: Do not build fp128 to decimal ppc functions"

This is now fixed in gcc properly, and the patches are backported into
gcc11 branch which OE updated to recently.

https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=645bfc161987a12395869728b63ed01084d23c00
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=f1d012911bd103e9701ed378f32928a3cbcf028a

This reverts commit 7883b4c1384fe30066072f39e9a930be537bc3b4.

(From OE-Core rev: ab8b8153469a038b09b6ff24be41f5942dca60ab)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/libgcc-initial.inc

@@ -51,8 +51,6 @@ do_configure_prepend () {
 
 do_configure_append () {
 	sed -i -e 's#thread_header = .*#thread_header = gthr-single.h#' ${B}/${BPN}/Makefile
-	sed -i -e '/^libgcc_tm_defines = $/a fp128_dec_funcs =' ${B}/${BPN}/Makefile
-	sed -i -e '/^libgcc_tm_defines = $/a fp128_decstr_funcs =' ${B}/${BPN}/Makefile
 }
 
 do_install_append () {