tools/examples: remove --disable-sandbox from example

most features (especially for a simple run) should work without
requiring the sandbox to be disabled so we can remove that option from
the example command to run crosvm.

BUG=none
TEST=run the example

Change-Id: I7455062b9745fe520dccf2b54d55ec78109ff9a3
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4303079
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
Auto-Submit: Maciek Swiech <drmasquatch@google.com>
diff --git a/tools/examples/example_simple b/tools/examples/example_simple
index 12b2332..e619046 100755
--- a/tools/examples/example_simple
+++ b/tools/examples/example_simple
@@ -24,11 +24,10 @@
 fi
 
 # ANCHOR: run
-# Run crosvm without sandboxing.
+# Run crosvm.
 # The rootfs is an image of a partitioned hard drive, so we need to tell
 # the kernel which partition to use (vda5 in case of ubuntu-20.04).
 cargo run --no-default-features -- run \
-    --disable-sandbox \
     --rwdisk ./rootfs \
     --initrd ./initrd.img-* \
     -p "root=/dev/vda5" \