(chocolatey#2510) Don't run unsupported uninstall services on non-win…

…dows

This put a check on the powershell uninstall script, shimgen uninstall,
autoUninstaller and shutdown /a calls during uninstall. They will now
only run on windows. None of these services work on non-windows, so
they should not be run

src/chocolatey/infrastructure.app/services/ChocolateyPackageService.cs

@@ -986,21 +986,29 @@ public virtual void handle_package_uninstall(PackageResult packageResult, Chocol
                 packageResult.InstallLocation += ".{0}".format_with(packageResult.Package.Version.to_string());
             }
 
-            _shimgenService.uninstall(config, packageResult);
-
-            if (!config.SkipPackageInstallProvider)
+            //These items only apply to windows systems.
+            if (config.Information.PlatformType == PlatformType.Windows)
             {
-                _powershellService.uninstall(config, packageResult);
-            }
+                _shimgenService.uninstall(config, packageResult);
 
-            if (packageResult.Success)
+                if (!config.SkipPackageInstallProvider)
+                {
+                    _powershellService.uninstall(config, packageResult);
+                }
+
+                if (packageResult.Success)
+                {
+                    _autoUninstallerService.run(packageResult, config);
+                }
+
+                // we don't care about the exit code
+                CommandExecutor.execute_static(_shutdownExe, "/a", config.CommandExecutionTimeoutSeconds, _fileSystem.get_current_directory(), (s, e) => { }, (s, e) => { }, false, false);
+            }
+            else
             {
-                _autoUninstallerService.run(packageResult, config);
+                this.Log().Info(ChocolateyLoggers.Important, () => " Skipping Powershell, shimgen, and autoUninstaller portions of the uninstall due to non-Windows.");
             }
 
-            // we don't care about the exit code
-            if (config.Information.PlatformType == PlatformType.Windows) CommandExecutor.execute_static(_shutdownExe, "/a", config.CommandExecutionTimeoutSeconds, _fileSystem.get_current_directory(), (s, e) => { }, (s, e) => { }, false, false);
-
             if (packageResult.Success)
             {
                 //todo: v2 clean up package information store for things no longer installed (call it compact?)