Remove Platform module

src/Microsoft.PowerShell.CoreConsoleHost/PSL_profile.ps1

@@ -1,5 +1,3 @@
 function prompt {
    "PS " + $(get-location) + "> "
 }
-
-Import-Module Microsoft.PowerShell.Platform

src/Modules/Microsoft.PowerShell.Platform/Microsoft.PowerShell.Platform.psm1

@@ -1,18 +0,0 @@
-# Use the .NET Core APIs to determine the current platform; if a runtime
-# exception is thrown, we are on FullCLR, not .NET Core.
-try {
-    $Runtime = [System.Runtime.InteropServices.RuntimeInformation]
-    $OSPlatform = [System.Runtime.InteropServices.OSPlatform]
-
-    $IsCore = $true
-    $IsLinux = $Runtime::IsOSPlatform($OSPlatform::Linux)
-    $IsOSX = $Runtime::IsOSPlatform($OSPlatform::OSX)
-    $IsWindows = $Runtime::IsOSPlatform($OSPlatform::Windows)
-} catch [System.Management.Automation.RuntimeException] {
-    $IsCore = $false
-    $IsLinux = $false
-    $IsOSX = $false
-    $IsWindows = $true
-}
-
-Export-ModuleMember -Variable IsCore, IsLinux, IsOSX, IsWindows