cros_sdk: drop --workspace option

In the brillo days, we had separate workspaces for each product.  But
that concept is long dead and the code has (mostly) been deleted, so
drop this command line flag too.

We've actually already deleted support for this in src/scripts/ and
nothing blew up, so clearly the bots are fine with it :).

BUG=chromium:934975
TEST=precq passes

Change-Id: I4d4f92b640580e9927a2778dc7182a06abdd28ac
Reviewed-on: https://chromium-review.googlesource.com/1495839
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alex Klein <saklein@chromium.org>
diff --git a/scripts/cros_sdk.py b/scripts/cros_sdk.py
index 6217b8c..df4bfdb 100644
--- a/scripts/cros_sdk.py
+++ b/scripts/cros_sdk.py
@@ -222,8 +222,7 @@
 
 
 def EnterChroot(chroot_path, cache_dir, chrome_root, chrome_root_mount,
-                workspace, goma_dir, goma_client_json, working_dir,
-                additional_args):
+                goma_dir, goma_client_json, working_dir, additional_args):
   """Enters an existing SDK chroot"""
   st = os.statvfs(os.path.join(chroot_path, 'usr', 'bin', 'sudo'))
   # The os.ST_NOSUID constant wasn't added until python-3.2.
@@ -235,8 +234,6 @@
     cmd.extend(['--chrome_root', chrome_root])
   if chrome_root_mount:
     cmd.extend(['--chrome_root_mount', chrome_root_mount])
-  if workspace:
-    cmd.extend(['--workspace_root', workspace])
   if goma_dir:
     cmd.extend(['--goma_dir', goma_dir])
   if goma_client_json:
@@ -707,8 +704,6 @@
                       help=('Use this sdk version.  For prebuilt, current is %r'
                             ', for bootstrapping it is %r.'
                             % (sdk_latest_version, bootstrap_latest_version)))
-  parser.add_argument('--workspace',
-                      help='Workspace directory to mount into the chroot.')
   parser.add_argument('--goma_dir', type='path',
                       help='Goma installed directory to mount into the chroot.')
   parser.add_argument('--goma_client_json', type='path',
@@ -1106,6 +1101,6 @@
       if options.enter:
         lock.read_lock()
         EnterChroot(options.chroot, options.cache_dir, options.chrome_root,
-                    options.chrome_root_mount, options.workspace,
-                    options.goma_dir, options.goma_client_json,
-                    options.working_dir, chroot_command)
+                    options.chrome_root_mount, options.goma_dir,
+                    options.goma_client_json, options.working_dir,
+                    chroot_command)