DEVX-772: Erasing not used imports

Author: ShipilA

examples/spring-newrelic/src/main/java/com/commercetools/sdk/examples/springmvc/config/CtpSecurityConfig.java

@@ -6,11 +6,7 @@
 import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.web.server.ServerHttpSecurity;
 import org.springframework.security.web.SecurityFilterChain;
-import org.springframework.security.web.server.SecurityWebFilterChain;
-import org.springframework.security.web.server.context.ServerSecurityContextRepository;
-import org.springframework.security.web.server.context.WebSessionServerSecurityContextRepository;
 
 @Configuration
 @EnableWebSecurity