Silence rm warning when files are not existing

Author: bjorn3

build_sysroot/build_sysroot.sh

@@ -11,7 +11,7 @@ popd >/dev/null
 
 # 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} || true
+rm -r target/*/{debug,release}/{build,deps,examples,libsysroot*,native} 2>/dev/null || true
 rm -r sysroot/ 2>/dev/null || true
 
 # Build libs