Remove unnecessary computed

SiteSubHeader component already has a computed property  for backButtonAccessibleText.

src/layouts/vehicle-make/vehicle-make.vue

@@ -5,9 +5,8 @@
         <div class="select-car-form rounded text-center">
           <vehicleBanner cmsWidgetName="VehicleBannerWidget" :displayGenericVehicleImage="true"/>
           <siteSubHeader 
-            cmsWidgetName="SiteSubHeaderWidget" 
+            cmsWidgetName="SiteSubHeaderWidget"
             :hasBackButton="true"
-            :backButtonAccessibleText="backButtonAccessibleText"
             @click-event="backButtonAction"
           />
           <div class="fade-on-route-transition">
@@ -97,12 +96,6 @@
               this.$route
             );
           },
-        },
-        computed: {
-          backButtonAccessibleText()
-            {
-              return this.getCmsContent(this.cmsWidgetName, "BackButtonAccessibleText")
-            },
-        },
+        }        
     };
 </script>