Remove explicit call to authorizationCodeGrant

See gh-13812

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/oauth2/client/servlet/OAuth2WebSecurityConfiguration.java

@@ -61,7 +61,7 @@ class OAuth2WebSecurityConfiguration {
 		@Override
 		protected void configure(HttpSecurity http) throws Exception {
 			http.authorizeRequests().anyRequest().authenticated().and().oauth2Login()
-					.and().oauth2Client().authorizationCodeGrant();
+					.and().oauth2Client();
 		}
 
 	}