Remove @author tags (#5601)

Our files are up to a decade old, and have churned so much, that the initial author of the file no longer has much meaning.

Furthermore, this will encourage developers to post to the developer group, rather than emailing Googlers (usually me) directly.

demos/blockfactory/app_controller.js

@@ -9,7 +9,6 @@
  * Factory, Block Library, and Block Exporter functionality into a single web
  * app.
  *
- * @author quachtina96 (Tina Quach)
  */
 
 /**

demos/blockfactory/block_definition_extractor.js

@@ -18,7 +18,6 @@
  * The <code>exampleBlocklyBlock</code> is usually the block loaded into the
  * preview workspace after manually entering the block definition.
  *
- * @author JC-Orozco (Juan Carlos Orozco), AnmAtAnm (Andrew n marshall)
  */
 'use strict';
 

demos/blockfactory/block_exporter_controller.js

@@ -10,7 +10,6 @@
  * easily using a visual interface. Depends on Block Exporter View and Block
  * Exporter Tools classes. Interacts with Export Settings in the index.html.
  *
- * @author quachtina96 (Tina Quach)
  */
 
 'use strict';

demos/blockfactory/block_exporter_tools.js

@@ -10,7 +10,6 @@
  * toolbox XML for the exporter's workspace.  Depends on the FactoryUtils for
  * its code generation functions.
  *
- * @author quachtina96 (Tina Quach)
  */
 'use strict';
 

demos/blockfactory/block_exporter_view.js

@@ -8,7 +8,6 @@
  * @fileoverview Javascript for the Block Exporter View class. Reads from and
  * manages a block selector through which users select blocks to export.
  *
- * @author quachtina96 (Tina Quach)
  */
 
 'use strict';

demos/blockfactory/block_library_controller.js

@@ -14,7 +14,6 @@
  *  - clear their block library
  * Depends on BlockFactory functions defined in factory.js.
  *
- * @author quachtina96 (Tina Quach)
  */
 'use strict';
 

demos/blockfactory/block_library_storage.js

@@ -8,7 +8,6 @@
  * @fileoverview Javascript for Block Library's Storage Class.
  * Depends on Block Library for its namespace.
  *
- * @author quachtina96 (Tina Quach)
  */
 
 'use strict';

demos/blockfactory/block_library_view.js

@@ -8,7 +8,6 @@
  * @fileoverview Javascript for BlockLibraryView class. It manages the display
  * of the Block Library dropdown, save, and delete buttons.
  *
- * @author quachtina96 (Tina Quach)
  */
 
 'use strict';

demos/blockfactory/block_option.js

@@ -10,7 +10,6 @@
  * option has a checkbox, a label, and a preview workspace through which to
  * view the block.
  *
- * @author quachtina96 (Tina Quach)
  */
 'use strict';
 

demos/blockfactory/blocks.js

@@ -6,7 +6,6 @@
 
 /**
  * @fileoverview Blocks for Blockly's Block Factory application.
- * @author fraser@google.com (Neil Fraser)
  */
 'use strict';
 

demos/blockfactory/factory.js

@@ -11,7 +11,6 @@
  * generator stub. Uses the Block Factory namespace. Depends on the FactoryUtils
  * for its code generation functions.
  *
- * @author fraser@google.com (Neil Fraser), quachtina96 (Tina Quach)
  */
 'use strict';
 

demos/blockfactory/factory_utils.js

@@ -10,7 +10,6 @@
  * Exporter applications within Blockly Factory. Holds functions to generate
  * block definitions and generator stubs and to create and download files.
  *
- * @author fraser@google.com (Neil Fraser), quachtina96 (Tina Quach), JC-Orozco
  * (Juan Carlos Orozco)
  */
 'use strict';

demos/blockfactory/standard_categories.js

@@ -11,7 +11,6 @@
  * that particular category. Also has a list of core block types provided
  * by Blockly.
  *
- * @author Emma Dauterman (evd2014)
  */
  'use strict';
 

demos/blockfactory/workspacefactory/wfactory_controller.js

@@ -17,7 +17,6 @@
  * - changing a category name
  * - moving the position of a category.
  *
- * @author Emma Dauterman (evd2014)
  */
 
 /**

demos/blockfactory/workspacefactory/wfactory_generator.js

@@ -11,7 +11,6 @@
  * Depends on a hidden workspace created in the generator to load saved XML in
  * order to generate toolbox XML.
  *
- * @author Emma Dauterman (evd2014)
  */
 
 

demos/blockfactory/workspacefactory/wfactory_init.js

@@ -10,7 +10,6 @@
  * keydown events and Blockly events, and configures the initial setup of
  * the page.
  *
- * @author Emma Dauterman (evd2014)
  */
 
 /**

demos/blockfactory/workspacefactory/wfactory_model.js

@@ -13,7 +13,6 @@
  * element. Also keeps track of all the user-created shadow blocks and
  * manipulates them as necessary.
  *
- * @author Emma Dauterman (evd2014)
  */
 
 /**

demos/blockfactory/workspacefactory/wfactory_view.js

@@ -11,7 +11,6 @@
  * each category are stored in tab map, which associates a unique ID for a
  * category with a particular tab.
  *
- * @author Emma Dauterman (edauterman)
  */