fix: deprecate unity-launch flag (microsoft#209471)

Author: rzhao271

resources/linux/code.desktop

@@ -2,7 +2,7 @@
 Name=@@NAME_LONG@@
 Comment=Code Editing. Redefined.
 GenericName=Text Editor
-Exec=@@EXEC@@ --unity-launch %F
+Exec=@@EXEC@@ %F
 Icon=@@ICON@@
 Type=Application
 StartupNotify=false

src/vs/code/electron-main/app.ts

@@ -1356,7 +1356,7 @@ export class CodeApplication extends Disposable {
 		return windowsMainService.open({
 			context,
 			cli: args,
-			forceNewWindow: args['new-window'] || (!hasCliArgs && args['unity-launch']),
+			forceNewWindow: args['new-window'],
 			diffMode: args.diff,
 			mergeMode: args.merge,
 			noRecentEntry,

src/vs/platform/environment/common/argv.ts

@@ -38,7 +38,6 @@ export interface NativeParsedArgs {
 	add?: boolean;
 	goto?: boolean;
 	'new-window'?: boolean;
-	'unity-launch'?: boolean; // Always open a new window, except if opening the first window or opening a file or folder as part of the launch.
 	'reuse-window'?: boolean;
 	locale?: string;
 	'user-data-dir'?: string;

src/vs/platform/environment/node/argv.ts

@@ -157,7 +157,6 @@ export const OPTIONS: OptionDescriptions<Required<NativeParsedArgs>> = {
 	'crash-reporter-directory': { type: 'string' },
 	'crash-reporter-id': { type: 'string' },
 	'skip-add-to-recently-opened': { type: 'boolean' },
-	'unity-launch': { type: 'boolean' },
 	'open-url': { type: 'boolean' },
 	'file-write': { type: 'boolean' },
 	'file-chmod': { type: 'boolean' },

src/vs/platform/launch/electron-main/launchMainService.ts

@@ -147,7 +147,7 @@ export class LaunchMainService implements ILaunchMainService {
 			let openNewWindow = false;
 
 			// Force new window
-			if (args['new-window'] || args['unity-launch'] || baseConfig.forceProfile || baseConfig.forceTempProfile) {
+			if (args['new-window'] || baseConfig.forceProfile || baseConfig.forceTempProfile) {
 				openNewWindow = true;
 			}