Revert macOS chunking PR (microsoft#300933)

Revert PR

Author: meganrogge

src/vs/platform/terminal/node/terminalProcess.ts

@@ -110,7 +110,6 @@ export class TerminalProcess extends Disposable implements ITerminalChildProcess
 
 	private _isPtyPaused: boolean = false;
 	private _unacknowledgedCharCount: number = 0;
-	private _writeQueue: Promise<void> = Promise.resolve();
 	get exitMessage(): string | undefined { return this._exitMessage; }
 
 	get currentTitle(): string { return this._windowsShellHelper?.shellTitle || this._currentTitle; }
@@ -469,32 +468,12 @@ export class TerminalProcess extends Disposable implements ITerminalChildProcess
 		this._logService.trace('node-pty.IPty#write', data, isBinary);
 		if (isBinary) {
 			this._ptyProcess!.write(Buffer.from(data, 'binary'));
-		} else if (isMacintosh && data.length > 512 && data.includes('\r')) {
-			// macOS PTY has a ~1024-byte canonical-mode input buffer. Multiline
-			// input exceeding this causes writes to block or corrupt due to
-			// backpressure from the shell's line editor echoing characters.
-			// https://github.com/microsoft/vscode/issues/296955
-			this._writeChunked(data);
 		} else {
 			this._ptyProcess!.write(data);
 		}
 		this._childProcessMonitor?.handleInput();
 	}
 
-	private _writeChunked(data: string): void {
-		this._writeQueue = this._writeQueue.then(async () => {
-			for (let i = 0; i < data.length; i += 512) {
-				if (this._store.isDisposed) {
-					return;
-				}
-				this._ptyProcess!.write(data.slice(i, i + 512));
-				if (i + 512 < data.length) {
-					await timeout(5);
-				}
-			}
-		});
-	}
-
 	sendSignal(signal: string): void {
 		if (this._store.isDisposed || !this._ptyProcess) {
 			return;