Remove --experimental_ui from documentation
This has been enabled by default for a while.
@@ -123,12 +123,6 @@ query --output=label_kind
# file instead.
test --test_output=errors
-# Show which actions are running under which workers and print all
-# the actions running in parallel. This shows that Bazel runs on all
-# cores of a CPU.
-build --experimental_ui
-test --experimental_ui
-
###############################
# Typescript / Angular / Sass #
###############################
