Remove deprecated items. All are unused in the code.

since 2002 (d8155fb9):

Install/AdditionalClasspath
Install/AdditionalSearchPath
Install/ExcludeVersion
Install/InstallationPackage
Install/PackageInstallationDirectory
Install/RequiredVersion
Install/Vendor
Install/VerifiedVersion
Install/Version

VirtualMachine/DebugPort
VirtualMachine/DisableAsyncGC
VirtualMachine/EnableClassGC
VirtualMachine/EnableVerboseGC
VirtualMachine/EnvironmentType
VirtualMachine/JavaLibPath
VirtualMachine/JavaStackSize
VirtualMachine/MaxHeapSize
VirtualMachine/MinHeapSize
VirtualMachine/NativeStackSize
VirtualMachine/RunTimeLib
VirtualMachine/SystemClassPath
VirtualMachine/VMType
VirtualMachine/Verbose
VirtualMachine/VerifyMode

Change-Id: Iefde5b6d4ff57dc708059681a247efa419c11013