Revert of Add ScopedStubEnterpriseInstallAttributes for tests to set test install attributes.

Revert of Add ScopedStubEnterpriseInstallAttributes for tests to set test install attributes. (https://codereview.chromium.org/247283007/)

Reason for revert:
The CL has caused memory leaks on the CrOS ASan bots originating from policy::DeviceStatusCollectorTest.

Original issue's description:
> Add ScopedStubEnterpriseInstallAttributes for tests to set test install attributes.
> 
> This change is motivated by the need to set the test install attributes before the browser policy connector is initialized for the first time. In particular, test class members may cause the policy connector to be initialized in their constructors, so we also need to set the install attributes in the constructor of a member.
> 
> BUG=243341
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266094

TBR=mnissler@chromium.org,stepco@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=243341

[Alexander Potapenko, 2014-04-25 12:41:08]

Created Revert of Add ScopedStubEnterpriseInstallAttributes for tests to set
test install attributes.

[Alexander Potapenko, 2014-04-25 12:42:02]

The CQ bit was unchecked by glider@chromium.org

[Alexander Potapenko, 2014-04-25 12:42:03]

The CQ bit was checked by glider@chromium.org

[Mattias Nissler (ping if slow), 2014-04-25 12:44:45]

LGTM. Please note that https://codereview.chromium.org/228553002/ is in the CQ
right now, which depends on this. So you probably want to cancel that.

[Alexander Potapenko, 2014-04-25 12:47:58]

On 2014/04/25 12:44:45, Mattias Nissler wrote:
> LGTM. Please note that https://codereview.chromium.org/228553002/ is in the CQ
> right now, which depends on this. So you probably want to cancel that.

Done.
I don't see CQ's attempts to commit this particular CL, so I'll probably try
drover.

[Alexander Potapenko, 2014-04-25 12:54:37]

The CQ bit was unchecked by glider@chromium.org

[Alexander Potapenko, 2014-04-25 12:54:51]

On 2014/04/25 12:54:37, Alexander Potapenko wrote:
> The CQ bit was unchecked by mailto:glider@chromium.org

Reverted using drover