deps: remove **/node_modules/form-data/README.md

Having multiple files with the same name but different casings causes
problems on lots of OS-s.

Refs: nodejs#12624
Refs: nodejs#11085
Refs: nodejs#11020

PR-URL: nodejs#12643
Reviewed-By: Vse Mozhet Byt <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Timothy Gu <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Alexey Orlenko <[email protected]>
Reviewed-By: Sakthipriyan Vairamani <[email protected]>