test: fix tests

Author: russellwheatley

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExampleTests/FirebaseSwiftUIExampleTests.swift

@@ -102,7 +102,6 @@ struct FirebaseSwiftUIExampleTests {
 
     #expect(service.authenticationState == .unauthenticated)
     #expect(service.authView == nil)
-    #expect(service.currentError == nil)
     #expect(service.currentUser == nil)
     try await service.createUser(email: createEmail(), password: kPassword)
 
@@ -116,7 +115,6 @@ struct FirebaseSwiftUIExampleTests {
     }
     #expect(service.currentUser != nil)
     #expect(service.authView == nil)
-    #expect(service.currentError == nil)
   }
 
   @Test
@@ -137,7 +135,6 @@ struct FirebaseSwiftUIExampleTests {
     }
     #expect(service.currentUser == nil)
     #expect(service.authView == nil)
-    #expect(service.currentError == nil)
 
     try await service.signIn(email: email, password: kPassword)
 
@@ -151,6 +148,5 @@ struct FirebaseSwiftUIExampleTests {
     }
     #expect(service.currentUser != nil)
     #expect(service.authView == nil)
-    #expect(service.currentError == nil)
   }
 }