Remove pharo artifacts on port from Cog/cygwinbuild->Flat/build.win32x86/squeak.cog.v3 ?

Hi Eliot.

"Flat" is "Cog" for the purpose of this flattening project. I named it after my jokes. (:

I am copying Cog/cygwinbuild to Flat/win32x86/squeak.cog.v3/

Currently thare are some pharo artifacts:

Pharo.def.in

Pharo.exe.manifest

Pharo.ico

Pharo.rc

Since Pharo has their own build system, I think these should be removed from squeak stuff to avoid confusion.

Your call.

t