deps: remove jinja.el from deps/v8_inspector

jinja.el is not shipped as part of the distribution, and neither is
it used in the build. While not strictly necessary, removing it
simplifies life from a licensing point of view.

PR-URL: #7796
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>

Author: ofrobots