Remove font size fallback

Author: Tyriar

src/vs/workbench/contrib/terminal/browser/terminalConfigurationService.ts

@@ -108,7 +108,7 @@ export class TerminalFontMetrics extends Disposable {
 		const editorConfig = this._configurationService.getValue<IEditorOptions>('editor');
 
 		let fontFamily = this._terminalConfigurationService.config.fontFamily || editorConfig.fontFamily || EDITOR_FONT_DEFAULTS.fontFamily || 'monospace';
-		let fontSize = clampInt(this._terminalConfigurationService.config.fontSize ?? 12, FontConstants.MinimumFontSize, FontConstants.MaximumFontSize, EDITOR_FONT_DEFAULTS.fontSize);
+		let fontSize = clampInt(this._terminalConfigurationService.config.fontSize, FontConstants.MinimumFontSize, FontConstants.MaximumFontSize, EDITOR_FONT_DEFAULTS.fontSize);
 
 		// Work around bad font on Fedora/Ubuntu
 		if (!this._terminalConfigurationService.config.fontFamily) {