doc: move TSC and CTC meeting minutes out of core repo

The TSC and CTC meeting minutes are more properly placed in
the nodejs/tsc and nodejs/ctc repositories, respectively.

PR-URL: https://github.com/nodejs/node/pull/9503


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>