Remove an invalid CSS hack that had fixed the Tooltip position within…

… a Modal before.

Currently, the minimum supported version of this extension is WP 5.9.
- This hack doesn't work for WP 5.9 and 6.0.
- WP >= 6.1 itself has already fixed this issue, so it's no longer needed.

js/src/css/shared/_gutenberg-components.scss

@@ -62,24 +62,3 @@
 .components-input-control__suffix {
 	margin-right: $grid-unit;
 }
-
-// Hack to fix the Tooltip position of the top-right side close button in a Modal component.
-// The follow up can be found here: https://github.com/woocommerce/google-listings-and-ads/issues/203
-.components-modal {
-	&__screen-overlay {
-		display: flex;
-		justify-content: center;
-		align-items: center;
-	}
-
-	&__frame {
-		@include break-small {
-			transform: initial;
-			position: relative;
-			top: 0;
-			bottom: 0;
-			left: 0;
-			right: 0;
-		}
-	}
-}