chore(build.ps1): remove obsolete build scripts

Author: jaredcnance

Build.ps1

@@ -1,61 +1,5 @@
-<#
-.SYNOPSIS
-    You can add this to you build script to ensure that psbuild is available before calling
-    Invoke-MSBuild. If psbuild is not available locally it will be downloaded automatically.
-#>
-function EnsurePsbuildInstalled{
-    [cmdletbinding()]
-    param(
-        [string]$psbuildInstallUri = 'https://raw.githubusercontent.com/ligershark/psbuild/master/src/GetPSBuild.ps1'
-    )
-    process{
-        if(-not (Get-Command "Invoke-MsBuild" -errorAction SilentlyContinue)){
-            'Installing psbuild from [{0}]' -f $psbuildInstallUri | Write-Verbose
-            (new-object Net.WebClient).DownloadString($psbuildInstallUri) | iex
-        }
-        else{
-            'psbuild already loaded, skipping download' | Write-Verbose
-        }
-
-        # make sure it's loaded and throw if not
-        if(-not (Get-Command "Invoke-MsBuild" -errorAction SilentlyContinue)){
-            throw ('Unable to install/load psbuild from [{0}]' -f $psbuildInstallUri)
-        }
-    }
-}
-
-# Taken from psake https://github.com/psake/psake
-
-<#
-.SYNOPSIS
-  This is a helper function that runs a scriptblock and checks the PS variable $lastexitcode
-  to see if an error occcured. If an error is detected then an exception is thrown.
-  This function allows you to run command-line programs without having to
-  explicitly check the $lastexitcode variable.
-.EXAMPLE
-  exec { svn info $repository_trunk } "Error executing SVN. Please verify SVN command-line client is installed"
-#>
-function Exec
-{
-    [CmdletBinding()]
-    param(
-        [Parameter(Position=0,Mandatory=1)][scriptblock]$cmd,
-        [Parameter(Position=1,Mandatory=0)][string]$errorMessage = ($msgs.error_bad_command -f $cmd)
-    )
-    & $cmd
-    if ($lastexitcode -ne 0) {
-        throw ("Exec: " + $errorMessage)
-    }
-}
-
-if(Test-Path .\artifacts) { Remove-Item .\artifacts -Force -Recurse }
-
-EnsurePsbuildInstalled
-
 exec { & dotnet restore .\src\JsonApiDotNetCore\JsonApiDotNetCore.csproj }
 
-#Invoke-MSBuild
-
 $revision = @{ $true = $env:APPVEYOR_BUILD_NUMBER; $false = 1 }[$env:APPVEYOR_BUILD_NUMBER -ne $NULL];
 $revision = "{0:D4}" -f [convert]::ToInt32($revision, 10)