docs(material/select): remove placeholder fallback from aria-label docs (#21942)

jeripeierSBB · andrewseguin · commit ba592222e623 · 2021-02-23T11:32:59.000-07:00
The fallback seems to have been removed with #20082 (cherry picked from commit fbf58f8)
diff --git a/src/material/select/select.ts b/src/material/select/select.ts
@@ -413,7 +413,7 @@ export abstract class _MatSelectBase<C> extends _MatSelectMixinBase implements A
   }
   private _value: any;
 
-  /** Aria label of the select. If not specified, the placeholder will be used as label. */
+  /** Aria label of the select. */
   @Input('aria-label') ariaLabel: string = '';
 
   /** Input that can be used to specify the `aria-labelledby` attribute. */

Original file line number	Diff line number	Diff line change
`@@ -413,7 +413,7 @@ export abstract class _MatSelectBase<C> extends _MatSelectMixinBase implements A`
`413`	`413`	`}`
`414`	`414`	`private _value: any;`
`415`	`415`
`416`		`- /** Aria label of the select. If not specified, the placeholder will be used as label. */`
	`416`	`+ /** Aria label of the select. */`
`417`	`417`	`@Input('aria-label') ariaLabel: string = '';`
`418`	`418`
`419`	`419`	/** Input that can be used to specify the `aria-labelledby` attribute. */