wedge400: cpld_ver.sh code revised (#98)

Summary:
Summart:

As title
Pull Request resolved: facebookexternal/openbmc.celestica#98

Test Plan:
root@bmc-oob:~# cpld_ver.sh
SMB_SYSCPLD: 3.2
SMB_PWRCPLD: 3.0
SCMCPLD: 3.1
FCMCPLD: 2.0
root@bmc-oob:~#

Pass

Reviewed By: joancaneus

fbshipit-source-id: ccc71e6790

meta-facebook/meta-wedge400/recipes-utils/openbmc-utils/files/cpld_ver.sh

@@ -20,8 +20,6 @@
 
 . /usr/local/bin/openbmc-utils.sh
 
-PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin
-
 board_rev=$(wedge_board_rev)
 
 smb_ver=$(cat $SMBCPLD_SYSFS_DIR/cpld_ver | head -n 1)