Remove .gitignore file

Webhooks plugin is promoted to core gerrit plugins and the standalone
build mode was removed, but the .gitignore file was missed to be
removed.

Change-Id: Id973535668c628a937d3d39888443dc15e39affa
1 file changed
tree: 2bb5e741d8144b1714ccae25ac082117c87c9711
  1. src/
  2. BUILD
  3. LICENSE