Revert "psample: Require 'CAP_NET_ADMIN' when joining "packets" group"

This reverts commit ad2223a16925c20155294fdec7ae67127d8e16e1 which is
commit 44ec98ea5ea9cfecd31a5c4cc124703cb5442832 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I7235543b47283c02435320bf1a1c39139d68a5b6
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
diff --git a/net/psample/psample.c b/net/psample/psample.c
index 5913da7..482c07f 100644
--- a/net/psample/psample.c
+++ b/net/psample/psample.c
@@ -30,8 +30,7 @@
 
 static const struct genl_multicast_group psample_nl_mcgrps[] = {
 	[PSAMPLE_NL_MCGRP_CONFIG] = { .name = PSAMPLE_NL_MCGRP_CONFIG_NAME },
-	[PSAMPLE_NL_MCGRP_SAMPLE] = { .name = PSAMPLE_NL_MCGRP_SAMPLE_NAME,
-				      .flags = GENL_UNS_ADMIN_PERM },
+	[PSAMPLE_NL_MCGRP_SAMPLE] = { .name = PSAMPLE_NL_MCGRP_SAMPLE_NAME },
 };
 
 static struct genl_family psample_nl_family __ro_after_init;