Remove redundant inner modifier in LoginActivity

Author: JohnsonEricAtSalesforce

libs/SalesforceSDK/src/com/salesforce/androidsdk/ui/LoginActivity.kt

@@ -1659,7 +1659,7 @@ open class LoginActivity : FragmentActivity() {
      * Activity result callback for the "Login for Admin" custom tab.
      */
     @VisibleForTesting
-    internal inner class AdminCustomTabActivityResult : ActivityResultCallback<ActivityResult> {
+    internal class AdminCustomTabActivityResult : ActivityResultCallback<ActivityResult> {
         override fun onActivityResult(result: ActivityResult) {
             // Intentional no-op: keep the existing WebView visible on cancel.
         }

libs/test/SalesforceSDKTest/src/com/salesforce/androidsdk/ui/LoginActivityTest.kt

@@ -129,7 +129,7 @@ class LoginActivityTest {
         val activity = mockk<LoginActivity>(relaxed = true)
         every { activity.viewModel } returns viewModel
 
-        val adminResult = activity.AdminCustomTabActivityResult()
+        val adminResult = LoginActivity.AdminCustomTabActivityResult()
         adminResult.onActivityResult(ActivityResult(RESULT_CANCELED, Intent()))
 
         // Contrast with CustomTabActivityResult which calls these on cancel; the admin