Remove unused Main functions
Remove unused Main functions

sendOverProtocol:
https://cs.chromium.org/search/?q=sendOverProtocol&sq=package:chromium&type=cs

ReloadActionDelegate:
https://cs.chromium.org/search/?q=ReloadActionDelegate&sq=package:chromium&type=cs
Change-Id: Ib731666c239d0c1b7d38e4ac3ef575486ddba549
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1897681
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Commit-Queue: Yang Guo <1cf0af8245a3a17a632a2c73531392b0f9761c76@chromium.org>
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Yang Guo <1cf0af8245a3a17a632a2c73531392b0f9761c76@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend