scons: Delete the now unused --update-ref option.

This option was for use with the old scons based regression tests.
Those had been deleted for a while, but some other bits and pieces
related to them were still lying around, depending on this option. Now
that those have been cleaned up, this option can go away.

Change-Id: I95b41dd0a14c51e74d1e527eb40e09f49aaeaf7e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32122
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>

diff --git a/SConstruct b/SConstruct
index 96bb979709b9790e3b66f2bfc233449b8d25f56a..4dc48ae78d13b7bb72496a2f107a949bc41b1d43 100755 (executable)
--- a/SConstruct
+++ b/SConstruct
@@ -151,8 +151,6 @@ AddLocalOption('--no-lto', action='store_true',
 AddLocalOption('--force-lto', action='store_true',
                help='Use Link-Time Optimization instead of partial linking' +
                     ' when the compiler doesn\'t support using them together.')
-AddLocalOption('--update-ref', action='store_true',
-               help='Update test reference outputs')
 AddLocalOption('--verbose', action='store_true',
                help='Print full tool command lines')
 AddLocalOption('--without-python', action='store_true',