Remove negative margins

No longer needed after removing accordion component

Author: DanielCliftonGuardian

dotcom-rendering/src/components/KeyEventsCarousel.importable.tsx

@@ -31,18 +31,13 @@ const carouselStyles = css`
 	scroll-behavior: smooth;
 	overflow-x: auto;
 	overflow-y: hidden;
-	margin-right: -10px;
-	${from.tablet} {
-		margin-right: -20px;
+	scrollbar-width: none;
+	&::-webkit-scrollbar {
+		display: none;
 	}
 
 	${from.desktop} {
-		margin-right: 0px;
 		background-color: ${palette('--key-event-background-desktop')};
-		scrollbar-width: none;
-		&::-webkit-scrollbar {
-			display: none;
-		}
 	}
 `;
 const leftMarginStyles = css`