[fuchsia] Remove unused target from local-sdk builds.

The //topaz/packages/sdk:topaz target appears to now be empty, so remove
it from the build specification in local-sdk.py

Change-Id: I71d02f7f7e2baf61db33bbfb26068deda3115669
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2019367Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735371}

tools/fuchsia/local-sdk.py

@@ -36,9 +36,9 @@ def EnsureEmptyDir(path):
 
 def BuildForArch(arch):
   build_dir = 'out/release-' + arch
-  Run('scripts/fx', '--dir', build_dir, 'set', 'terminal.qemu-'+ arch,
-      '--with=//topaz/packages/sdk:topaz', '--with-base=//sdk/bundles:tools',
-      '--args=is_debug=false', '--args=build_sdk_archives=true')
+  Run('scripts/fx', '--dir', build_dir, 'set', 'terminal.qemu-' + arch,
+      '--with-base=//sdk/bundles:tools', '--args=is_debug=false',
+      '--args=build_sdk_archives=true')
   Run('scripts/fx', 'build', 'topaz/public/sdk:fuchsia_dart', 'sdk',
       'build/images')