Remove outdated entries in clean_all.sh

Author: bjorn3

clean_all.sh

@@ -2,9 +2,3 @@
 set -e
 
 rm -rf target/ build_system/target download/ build/ dist/
-
-# Kept for now in case someone updates their checkout of cg_clif before running clean_all.sh
-# FIXME remove at some point in the future
-rm y.bin y.bin.dSYM y.exe y.pdb 2>/dev/null || true
-rm -rf rand/ regex/ simple-raytracer/ portable-simd/ abi-checker/ abi-cafe/
-rm -rf build_sysroot/{sysroot_src/,target/,compiler-builtins/,rustc_version}