build-make: Remove setting the ARCHS variable

It's not used in this build script.

Author: mstorsjo

build-make.sh

@@ -42,7 +42,6 @@ PREFIX="$(cd "$PREFIX" && pwd)"
 : ${CORES:=$(nproc 2>/dev/null)}
 : ${CORES:=$(sysctl -n hw.ncpu 2>/dev/null)}
 : ${CORES:=4}
-: ${ARCHS:=${TOOLCHAIN_ARCHS-i686 x86_64 armv7 aarch64}}
 
 download() {
     if command -v wget >/dev/null; then