Remove code for Mac and Linux virtual print drivers.

There are significant structural and functional issues with this code.  I was going to remove just the Mac code, but doing so revealed issues with the Linux code as well.

BUG=111652
TEST=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=120993

[Scott Byer, 2012-02-03 22:36:59]

LGTM. Nuke it from orbit, it's the only way to be sure.

On 2012/02/03 22:33:10, Albert Bodenhamer wrote:

[Nico, 2012-02-03 23:58:39]

lgtm

awesome, thanks!

http://codereview.chromium.org/9307087/diff/4001/cloud_print/virtual_driver/p...
File cloud_print/virtual_driver/posix/backend.gyp (left):

http://codereview.chromium.org/9307087/diff/4001/cloud_print/virtual_driver/p...
cloud_print/virtual_driver/posix/backend.gyp:6: 'target_defaults': {
This file shows up as 'M' instead of 'D'?

[Albert Bodenhamer, 2012-02-06 17:28:09]

On 2012/02/03 23:58:39, Nico wrote:
> lgtm
> 
> awesome, thanks!
> 
>
http://codereview.chromium.org/9307087/diff/4001/cloud_print/virtual_driver/p...
> File cloud_print/virtual_driver/posix/backend.gyp (left):
> 
>
http://codereview.chromium.org/9307087/diff/4001/cloud_print/virtual_driver/p...
> cloud_print/virtual_driver/posix/backend.gyp:6: 'target_defaults': {
> This file shows up as 'M' instead of 'D'?
Odd.  Probably since I initially started with an edit of the file and then
deleted after.  Applying the patch seems to delete properly.

I'll go ahead and submit.  If anything weird results I'll clean it up in a
second CL.