spaced: Omit using a new PID namespace

Using a PID namespace implies forking into a new mount namespace.
However, spaced requires access to the user mount directories so
it should remain in the root mount namespace.

BUG=b:177966496
TEST=platform.Spaced passes

Change-Id: I97408e0ac004fa4d0801f82d795df65276c3a374
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/3232889
Tested-by: Sarthak Kukreti <sarthakkukreti@chromium.org>
Commit-Queue: Sarthak Kukreti <sarthakkukreti@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
diff --git a/spaced/init/spaced.conf b/spaced/init/spaced.conf
index 038ea35..1814bcc 100644
--- a/spaced/init/spaced.conf
+++ b/spaced/init/spaced.conf
@@ -42,7 +42,6 @@
   -i                                                               \
   --uts                                                            \
   -N                                                               \
-  -p                                                               \
   -u spaced -g spaced                                              \
   -G                                                               \
   -c 'cap_dac_override,cap_fowner,cap_sys_admin+eip'               \