scons: Remove -Werror for the gem5 v22.0 release

While gem5 compiles on all our supported compilers, removing the -Werror
flag on the stable branch ensures that, as new compilers are released
with stricter warnings, gem5 remains compilable.

Change-Id: I0efe6cf83714720ae0d5de9de9b993c6d8ab00a8
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/60510
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed