SEC-2789: Polish

Remove unnecessary "extends WebSecurityConfigurerAdapter"

samples/hellojs-jc/src/main/java/org/springframework/security/samples/config/SecurityConfig.java

@@ -7,7 +7,7 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 
 @EnableWebSecurity
-public class SecurityConfig extends WebSecurityConfigurerAdapter {
+public class SecurityConfig {
 
     @Autowired
     public void registerGlobalAuthentication(

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

@@ -7,7 +7,7 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 
 @EnableWebSecurity
-public class SecurityConfig extends WebSecurityConfigurerAdapter {
+public class SecurityConfig {
 
     @Autowired
     public void registerGlobalAuthentication(

samples/jdbc-jc/src/main/java/org/springframework/security/samples/config/SecurityConfig.java

@@ -10,7 +10,7 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 
 @EnableWebSecurity
-public class SecurityConfig extends WebSecurityConfigurerAdapter {
+public class SecurityConfig {
     @Autowired
     private DataSource dataSource;
 

samples/ldap-jc/src/main/java/org/springframework/security/samples/config/SecurityConfig.java

@@ -7,7 +7,7 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 
 @EnableWebSecurity
-public class SecurityConfig extends WebSecurityConfigurerAdapter {
+public class SecurityConfig {
     @Autowired
     public void registerGlobalAuthentication(
             AuthenticationManagerBuilder auth) throws Exception {