z80ex: remove not needed sed calls

build/Makefile did never have a usr/local reference,
that one exists only in /Makefile, but that file isn't used

lib64 is now handled by xbps-src

srcpkgs/z80ex/template

@@ -10,13 +10,6 @@ homepage="https://sourceforge.net/projects/z80ex/"
 distfiles="${SOURCEFORGE_SITE}/project/z80ex/z80ex/${version}/z80ex-${version}.tar.gz"
 checksum=6f5e521d068a614b41e10180ad4ae45b1bc258ec28c962543feb9078856c2530
 
-pre_configure() {
-	sed -i 's#lib64#lib#g' CMakeLists.txt
-}
-pre_build() {
-	sed -i 's#/usr/local#/usr#g' build/Makefile
-}
-
 z80ex-devel_package() {
 	short_desc+=" - development files"
 	depends="${sourcepkg}>=${version}_${revision}"