Remove redundant throws clauses

Removes exceptions that are declared in a method's signature but never thrown by the method itself or its implementations/derivatives.

samples/javaconfig/inmemory/src/main/java/org/springframework/security/samples/config/SecurityConfig.java

@@ -27,11 +27,11 @@ public class SecurityConfig {
 
 	// @formatter:off
 	@Bean
-	public UserDetailsService userDetailsService() throws Exception {
+	public UserDetailsService userDetailsService() {
 		User.UserBuilder builder = User.withDefaultPasswordEncoder();
 		UserDetails user = builder.username("user").password("password").roles("USER").build();
 		UserDetails admin = builder.username("admin").password("password").roles("USER", "ADMIN").build();
 		return new InMemoryUserDetailsManager(user, admin);
 	}
 		// @formatter:on
-}
+}