comment out unused parameters
comment out unused parameters

Summary: This uses `clang-tidy` to comment out unused parameters (in functions, methods and lambdas) in fbcode. Cases that the tool failed to handle are fixed manually.

Reviewed By: igorsugak

Differential Revision: D5454343

fbshipit-source-id: 5dee339b4334e25e963891b519a5aa81fbf627b2

kwlzn/watchman,facebook/watchman,kwlzn/watchman,kwlzn/watchman,facebook/watchman,nodakai/watchman,wez/watchman,nodakai/watchman,nodakai/watchman,kwlzn/watchman,nodakai/watchman,wez/watchman,facebook/watchman,facebook/watchman,wez/watchman,wez/watchman,nodakai/watchman,nodakai/watchman,wez/watchman,wez/watchman,kwlzn/watchman,nodakai/watchman,nodakai/watchman,wez/watchman,facebook/watchman,wez/watchman,facebook/watchman,facebook/watchman,facebook/watchman,nodakai/watchman,facebook/watchman,kwlzn/watchman,kwlzn/watchman,wez/watchman