remove unused imports from build files

Author: keyboardsurfer

benchmark/build.gradle.kts

@@ -13,8 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import com.google.samples.apps.nowinandroid.Flavor
-import com.google.samples.apps.nowinandroid.FlavorDimension
 import com.google.samples.apps.nowinandroid.configureFlavors
 
 plugins {