Drop Windows-specific SSH code

Summary: Ref T2015.  This code is only relevant when attempting to run commands on a Windows host over SSH.  Since SSH on Windows is extremely fragile and hard to maintain, and WinRM is a better long-term solution, drop this code (which will end up being unused when later diffs introduce the WinRM command interface).

Test Plan: This code won't be used when D10495 lands.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Projects: #drydock

Maniphest Tasks: T2015

Differential Revision: https://secure.phabricator.com/D13340

src/applications/drydock/interface/command/DrydockSSHCommandInterface.php

@@ -42,46 +42,8 @@ final class DrydockSSHCommandInterface extends DrydockCommandInterface {
     $this->openCredentialsIfNotOpen();
 
     $argv = func_get_args();
-
-    if ($this->getConfig('platform') === 'windows') {
-      // Handle Windows by executing the command under PowerShell.
-      $command = id(new PhutilCommandString($argv))
-        ->setEscapingMode(PhutilCommandString::MODE_POWERSHELL);
-
-      $change_directory = '';
-      if ($this->getWorkingDirectory() !== null) {
-        $change_directory .= 'cd '.$this->getWorkingDirectory();
-      }
-
-      $script = <<<EOF
-$change_directory
-$command
-if (\$LastExitCode -ne 0) {
-  exit \$LastExitCode
-}
-EOF;
-
-      // When Microsoft says "Unicode" they don't mean UTF-8.
-      $script = mb_convert_encoding($script, 'UTF-16LE');
-
-      $script = base64_encode($script);
-
-      $powershell =
-        'C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe';
-      $powershell .=
-        ' -ExecutionPolicy Bypass'.
-        ' -NonInteractive'.
-        ' -InputFormat Text'.
-        ' -OutputFormat Text'.
-        ' -EncodedCommand '.$script;
-
-      $full_command = $powershell;
-    } else {
-      // Handle UNIX by executing under the native shell.
     $argv = $this->applyWorkingDirectoryToArgv($argv);
-
     $full_command = call_user_func_array('csprintf', $argv);
-    }
 
     $command_timeout = '';
     if ($this->connectTimeout !== null) {