usercommands: remove IPMI_CMD command

The IPMI_CMD declared in usercommands.hpp is redundant because these
commands are already declared in api-types.hpp, so this commit
removes all IPMI_CMD in usercommands.hpp.

Change-Id: I347c30e1907b6fd0b2d311c970455195ade383ee
Signed-off-by: George Liu <liuxiwei@ieisystem.com>
diff --git a/user_channel/usercommands.hpp b/user_channel/usercommands.hpp
index 9f9ba26..a1fb7b9 100644
--- a/user_channel/usercommands.hpp
+++ b/user_channel/usercommands.hpp
@@ -21,18 +21,6 @@
 {
 
 /**
- * @enum IPMI commands for user command NETFN:APP.
- */
-enum ipmi_netfn_user_cmds
-{
-    IPMI_CMD_SET_USER_ACCESS = 0x43,
-    IPMI_CMD_GET_USER_ACCESS = 0x44,
-    IPMI_CMD_SET_USER_NAME = 0x45,
-    IPMI_CMD_GET_USER_NAME = 0x46,
-    IPMI_CMD_SET_USER_PASSWORD = 0x47,
-};
-
-/**
  * @enum IPMI set password return codes (refer spec sec 22.30)
  */
 enum ipmi_set_password_return_codes : uint8_t