[Backport staging] Remove a duplicate external link icon from `AnalyticsLearnMoreDialog` (#10927)

Co-authored-by: Suguru Hirahara <luixxiul@users.noreply.github.com>

res/css/views/dialogs/_AnalyticsLearnMoreDialog.pcss

@@ -39,18 +39,6 @@ limitations under the License.
         text-decoration: none;
     }
 
-    .mx_AnalyticsPolicyLink {
-        display: inline-block;
-        mask-image: url("$(res)/img/external-link.svg");
-        background-color: $accent;
-        mask-repeat: no-repeat;
-        mask-size: contain;
-        width: 12px;
-        height: 12px;
-        margin-left: 3px;
-        vertical-align: middle;
-    }
-
     .mx_AnalyticsLearnMore_bullets {
         padding-left: 0px;
     }

src/components/views/dialogs/AnalyticsLearnMoreDialog.tsx

@@ -58,7 +58,6 @@ export const AnalyticsLearnMoreDialog: React.FC<IProps> = ({
                         return (
                             <ExternalLink href={privacyPolicyUrl} rel="norefferer noopener" target="_blank">
                                 {sub}
-                                <span className="mx_AnalyticsPolicyLink" />
                             </ExternalLink>
                         );
                     },