update imports

Author: swolfand

docs/reference/views/user/user-button.mdx

@@ -53,12 +53,8 @@ The following examples show how to use the `UserButton` in your app.
 
 <If sdk="android">
   ```kotlin
-  import androidx.compose.material3.ExperimentalMaterial3Api
-  import androidx.compose.material3.Text
-  import androidx.compose.material3.TopAppBar
   import androidx.compose.runtime.Composable
   import androidx.compose.runtime.getValue
-  import androidx.compose.ui.tooling.preview.PreviewLightDark
   import androidx.lifecycle.compose.collectAsStateWithLifecycle
   import com.clerk.api.Clerk
   import com.clerk.ui.userbutton.UserButton
@@ -101,13 +97,11 @@ The following examples show how to use the `UserButton` in your app.
 
 <If sdk="android">
   ```kotlin
-  import androidx.compose.material3.ExperimentalMaterial3Api
   import androidx.compose.material3.Scaffold
   import androidx.compose.material3.Text
   import androidx.compose.material3.TopAppBar
   import androidx.compose.runtime.Composable
   import androidx.compose.runtime.getValue
-  import androidx.compose.ui.tooling.preview.PreviewLightDark
   import androidx.lifecycle.compose.collectAsStateWithLifecycle
   import com.clerk.api.Clerk
   import com.clerk.ui.userbutton.UserButton