fix(ui5-flexible-column-layout): speech output on layout arrows (#4034)

Fixes: #3699

Author: nnaydenow

packages/fiori/src/FlexibleColumnLayout.hbs

@@ -43,7 +43,6 @@
 		design="Transparent"
 		@click="{{startArrowClick}}"
 		style="{{styles.arrows.start}}"
-		aria-label="{{accStartArrowText}}"
 		title="{{accStartArrowText}}"
 	></ui5-button>
 {{/inline}}
@@ -56,7 +55,6 @@
 		icon="slim-arrow-left"
 		design="Transparent"
 		@click="{{endArrowClick}}"
-		aria-label="{{accEndArrowText}}"
 		title="{{accEndArrowText}}"
 	></ui5-button>
 {{/inline}}

packages/fiori/test/specs/FCL.spec.js

@@ -97,20 +97,14 @@ describe("FlexibleColumnLayout Behavior", () => {
 		// assert
 		assert.strictEqual(await startArrow.getAttribute("title"), startArrowText1,
 			"Start arrow has the correct tooltip.");
-		assert.strictEqual(await startArrow.getAttribute("aria-label"), startArrowText1,
-			"Start arrow has the correct aria-label.");
 		assert.strictEqual(await endArrow.getAttribute("title"), endArrowText,
 			"End arrow has the correct tooltip.");
-		assert.strictEqual(await endArrow.getAttribute("aria-label"), endArrowText,
-			"End arrow has the correct aria-label.");
 
 		// act
 		await startArrow.click();
 
 		// assert
 		assert.strictEqual(await startArrow.getAttribute("title"), startArrowText2,
 			"Start arrow has the correct tooltip.");
-		assert.strictEqual(await startArrow.getAttribute("aria-label"), startArrowText2,
-			"Start arrow has the correct aria-label.");
 	});
 });