duplicates scripts and dead submodules in sift-files

[juju4]

Some files are present multiples times like extract_mft_record_slack.py, ShellItems.py, shellbags.py https://github.com/sans-dfir/sift-files/tree/master/wbtools https://github.com/sans-dfir/sift-files/tree/master/scripts

Also these submodules links are dead

• Java_IDX_Parser
• PE_Carver

[ekristen]

This is all being reworked with https://github.com/sans-dfir/sift-saltstack