[clang] [clang-tools-extra] [llvm] Removal of 20,000+ lines of trailing whitespace (PR #182689)

[Matt Arsenault via cfe-commits]

arsenm wrote:

> This was supposed to be in the previous push. However, due to some complications, and compiling Swift at the time, I was unable to get it to push within a reasonable amount of time.

What? Please do not do do massive pull requests that touch every component like this 

https://github.com/llvm/llvm-project/pull/182689