Get rid of obsolete setup files

setup.cmd

@@ -1 +0,0 @@
-@powershell -ExecutionPolicy unrestricted %~dp0setup.ps1

setup.ps1

@@ -1,23 +0,0 @@
-function new-link($link, $target) {
-  if (test-path $target -PathType Container) {
-    cmd /c mklink /j $link $target
-  } else {
-    cmd /c mklink /h $link $target
-  }
-}
-
-$ignore = @(".gitignore", "setup.ps1", "setup.cmd")
-
-Get-ChildItem . |
-  ? { !$ignore.Contains($_.Name) } |
-  % {
-    $l = split-path -leaf $_.FullName
-    $p = split-path -parent (split-path -parent $_.FullName)
-    $t = join-path $p $l
-
-    if (test-path $t) {
-      remove-item -recurse -force $t
-    }
-
-    new-link $t $($_.FullName)
-  }