config-tools: remove unused package and add nosec to subprocess

The subprocess module is needed for calling package from python script.
Add #nosec for subprocess module importing.

Tracked-On: #6342
Signed-off-by: Yang,Yu-chu <yu-chu.yang@intel.com>

misc/config_tools/board_inspector/legacy/acpi.py

@@ -5,7 +5,7 @@
 
 import os
 import sys
-import subprocess
+import subprocess # nosec
 import shutil
 from collections import defaultdict
 import dmar

misc/config_tools/board_inspector/legacy/board_parser.py

@@ -7,7 +7,7 @@ import os
 import sys
 import shutil
 import argparse
-import subprocess
+import subprocess # nosec
 import pci_dev
 import dmi
 import acpi

misc/config_tools/board_inspector/legacy/misc.py

@@ -4,7 +4,6 @@
 #
 
 import parser_lib
-import subprocess
 
 MEM_PATH = ['/proc/iomem', '/proc/meminfo']
 TTY_PATH = '/sys/class/tty/'

misc/config_tools/board_inspector/legacy/parser_lib.py

@@ -4,7 +4,7 @@
 #
 
 import os
-import subprocess
+import subprocess # nosec
 
 BIOS_INFO_KEY = ['BIOS Information', 'Vendor:', 'Version:', 'Release Date:', 'BIOS Revision:']