revert back pure64 patch

core/gcc/spkgbuild

@@ -5,7 +5,7 @@
 
 name=gcc
 version=9.1.0
-release=2
+release=3
 source=(https://ftp.gnu.org/gnu/$name/$name-$version/$name-$version.tar.xz
 	c89 c99)
 md5sum=(6069ae3737cf02bf2cb44a391ef0e937
@@ -17,8 +17,6 @@ build() {
 
 	sed -e '/m64=/s/lib64/lib/' \
 	    -i.orig gcc/config/i386/t-linux64
-	sed -e '/GLIBC_DYNAMIC_LINKER64/s/lib64/lib/' \
-	    -i.orig gcc/config/i386/linux64.h
 
 	mkdir -v build
 	cd       build