[Windows] Remove global OF_None flag for Windows in ToolOutputFiles

Since we have created a new OF_TextWithCRLF flag, we no longer need to worry about OF_Text flag turning on CRLF translation. I can remove this workaround I added to globally open all ToolOutputFiles as binary on Windows.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D100034