Remove root check in update-workspace.sh

If you run as root then created files will be owned by root, this is
expected behaviour and not messing with permissions as stated in the
error message.

Running in a container the root user may map to the user starting the
container while all other users would need mapping to be able to work
with a bind mounted a checkout.

Further Debian patches out the root check to be able to build on their
builder.

Given the above remove the check.

Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

build/workspaces/update-workspaces.sh

@@ -1,10 +1,5 @@
 #!/bin/sh
 
-if [ "$(id -u)" = "0" ]; then
-	echo "Running as root will mess up file permissions. Aborting ..." 1>&2
-	exit 1
-fi
-
 die()
 {
 	echo ERROR: "$*"