Remove x86 and ARM configurations for sample projects.

[NeoAdonis]

This pull request involves changes to the project configurations and solutions to remove Win32 and Arm support:

• Removed Win32 and Arm from the project configurations. This includes removing the associated PropertyGroup, ImportGroup, and ItemDefinitionGroup entries for these platforms.
• Set default platform to x64.

The following samples that were able to build successfully under the latest WDK on x86 will have their support removed. If for some reason you need these deprecated versions of the samples, please take a look at the archived releases:

• avstream/sampledevicemft
• general/toaster/toastpkg
• general/tracing/systemtracecontrol
• hid/hclient
• input/layout
• network/config/bindview
• network/radio/radiomanagersample
• network/trans/inspect
• nfp/net
• setup/devcon
• storage/iscsi
• storage/tools/spti
• usb/usbview
• video/archive/pixlib
• wia
• wmi/wmiacpi

[NeoAdonis]

Stats building using the latest EWDK preview:

Before this change:

Architecture	Unsupported	Failed	Succeeded
x86/Win32	9	104 (-1*)	15 (+1*)
ARM	116	11	3

* on Debug|Win32 only

After this change:

Architecture	Unsupported	Failed	Succeeded
x86/Win32	126	4	0
ARM	126	4	0

As expected, all driver samples failed because of conditions disallowing the usage of x86 and ARM to build drivers. All applications for drivers succeeded, however.

The 4 failed samples after the configurations removal are the general/dchu collection that needs to be updated separately because the solution actually uses properties from the x86 and ARM configurations as a basis to build for x64 and ARM64, thus it cannot be updated using a script.