Remove unused build_sysroot.sh file

build_sysroot/build_sysroot.sh

@@ -1,34 +0,0 @@
-#!/usr/bin/env bash
-
-# Requires the CHANNEL env var to be set to `debug` or `release.`
-
-set -e
-cd $(dirname "$0")
-
-pushd ../
-source ./config.sh
-popd
-
-# Cleanup for previous run
-#     v Clean target dir except for build scripts and incremental cache
-rm -r target/*/{debug,release}/{build,deps,examples,libsysroot*,native} 2>/dev/null || true
-rm Cargo.lock test_target/Cargo.lock 2>/dev/null || true
-rm -r sysroot/ 2>/dev/null || true
-
-# Build libs
-export RUSTFLAGS="$RUSTFLAGS -Z force-unstable-if-unmarked"
-if [[ "$1" == "--release" ]]; then
-    sysroot_channel='release'
-    RUSTFLAGS="$RUSTFLAGS -Zmir-opt-level=3" cargo build --target $TARGET_TRIPLE --release
-else
-    sysroot_channel='debug'
-    cargo build --target $TARGET_TRIPLE
-fi
-
-# Copy files to sysroot
-mkdir -p sysroot/lib/rustlib/$TARGET_TRIPLE/lib/
-cp -r target/$TARGET_TRIPLE/$sysroot_channel/deps/* sysroot/lib/rustlib/$TARGET_TRIPLE/lib/
-# Copy the source files to the sysroot (Rust for Linux needs this).
-source_dir=sysroot/lib/rustlib/src/rust
-mkdir -p $source_dir
-cp -r sysroot_src/library/ $source_dir