Remove duplicate blank lines at the start of some extension src files

extensions/html-language-features/server/src/modes/htmlFolding.ts

@@ -3,7 +3,6 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-
 import { TextDocument, CancellationToken, Position, Range } from 'vscode-languageserver';
 import { FoldingRange } from 'vscode-languageserver-types';
 import { LanguageModes, LanguageMode } from './languageModes';