Revert "Add groups and users for volume daemon."

This reverts commit 7639508fcc1be4a95fc754873121ee6afb9b98ff.
The CL has caused VMTest failure.
https://uberchromegw.corp.google.com/i/chromeos/builders/mario%20incremental/builds/22741

BUG=None
TEST=None

Change-Id: I2eee4cedb0e76b5d77a8d8ae271d80bd7b471f5e
Reviewed-on: https://chromium-review.googlesource.com/218567
Reviewed-by: Yu-Ju Hong <yjhong@chromium.org>
Tested-by: Yu-Ju Hong <yjhong@chromium.org>
diff --git a/profiles/base/accounts/group/audio b/profiles/base/accounts/group/audio
index 6b4e663..f907580 100644
--- a/profiles/base/accounts/group/audio
+++ b/profiles/base/accounts/group/audio
@@ -1,3 +1,3 @@
 group:audio
 gid:18
-users:cras,chronos,volume
+users:cras,chronos
diff --git a/profiles/base/accounts/group/uinput b/profiles/base/accounts/group/uinput
deleted file mode 100644
index 565b65e..0000000
--- a/profiles/base/accounts/group/uinput
+++ /dev/null
@@ -1,3 +0,0 @@
-group:uinput
-gid:258
-users:bluetooth,volume
diff --git a/profiles/base/accounts/group/volume b/profiles/base/accounts/group/volume
deleted file mode 100644
index 4d188a0..0000000
--- a/profiles/base/accounts/group/volume
+++ /dev/null
@@ -1,4 +0,0 @@
-# Group for Chromium OS volume daemon
-group:volume
-gid:257
-users:
diff --git a/profiles/base/accounts/user/volume b/profiles/base/accounts/user/volume
deleted file mode 100644
index a7147bc..0000000
--- a/profiles/base/accounts/user/volume
+++ /dev/null
@@ -1,6 +0,0 @@
-user:volume
-uid:257
-gid:257
-gecos:Chromium OS volume daemon
-home:/dev/null
-shell:/bin/false