chore: remove alias comments (#6816)

* chore: remove alias comments

* chore: format

* chore: remove extra newlines

* chore: fix bad replaces

core/extensions.ts

@@ -36,7 +36,6 @@ export const TEST_ONLY = {allExtensions};
  * @param initFn The function to initialize an extended block.
  * @throws {Error} if the extension name is empty, the extension is already
  *     registered, or extensionFn is not a function.
- * @alias Blockly.Extensions.register
  */
 export function register(name: string, initFn: Function) {
   if (typeof name !== 'string' || name.trim() === '') {
@@ -58,7 +57,6 @@ export function register(name: string, initFn: Function) {
  * @param mixinObj The values to mix in.
  * @throws {Error} if the extension name is empty or the extension is already
  *     registered.
- * @alias Blockly.Extensions.registerMixin
  */
 export function registerMixin(name: string, mixinObj: AnyDuringMigration) {
   if (!mixinObj || typeof mixinObj !== 'object') {
@@ -81,7 +79,6 @@ export function registerMixin(name: string, mixinObj: AnyDuringMigration) {
  * @param opt_blockList A list of blocks to appear in the flyout of the mutator
  *     dialog.
  * @throws {Error} if the mutation is invalid or can't be applied to the block.
- * @alias Blockly.Extensions.registerMutator
  */
 export function registerMutator(
     name: string, mixinObj: AnyDuringMigration,
@@ -113,7 +110,6 @@ export function registerMutator(
  * Unregisters the extension registered with the given name.
  *
  * @param name The name of the extension to unregister.
- * @alias Blockly.Extensions.unregister
  */
 export function unregister(name: string) {
   if (isRegistered(name)) {
@@ -129,7 +125,6 @@ export function unregister(name: string) {
  *
  * @param name The name of the extension to check for.
  * @returns True if the extension is registered.  False if it is not registered.
- * @alias Blockly.Extensions.isRegistered
  */
 export function isRegistered(name: string): boolean {
   return !!allExtensions[name];
@@ -143,7 +138,6 @@ export function isRegistered(name: string): boolean {
  * @param block The block to apply the named extension to.
  * @param isMutator True if this extension defines a mutator.
  * @throws {Error} if the extension is not found.
- * @alias Blockly.Extensions.apply
  */
 export function apply(name: string, block: Block, isMutator: boolean) {
   const extensionFn = allExtensions[name];
@@ -387,7 +381,6 @@ export function runAfterPageLoad(fn: () => void) {
  *     lookup table.
  * @param lookupTable The table of field values to tooltip text.
  * @returns The extension function.
- * @alias Blockly.Extensions.buildTooltipForDropdown
  */
 export function buildTooltipForDropdown(
     dropdownName: string, lookupTable: {[key: string]: string}): Function {
@@ -470,7 +463,6 @@ function checkDropdownOptionsInTable(
  *     placeholder.
  * @param fieldName The field with the replacement text.
  * @returns The extension function.
- * @alias Blockly.Extensions.buildTooltipWithFieldText
  */
 export function buildTooltipWithFieldText(
     msgTemplate: string, fieldName: string): Function {