Revert Automatically detect 'development' profile

Revert commit a97bcfe3cd as adding
profiles automatically may be problematic.

Updates gh-296

spring-boot-samples/spring-boot-sample-simple/src/main/java/sample/simple/SampleSimpleApplication.java

@@ -20,7 +20,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
-import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 
@@ -44,8 +43,6 @@ public class SampleSimpleApplication implements CommandLineRunner {
 	}
 
 	public static void main(String[] args) throws Exception {
-		ConfigurableApplicationContext context = SpringApplication.run(
-				SampleSimpleApplication.class, args);
-		System.out.println(context.getEnvironment().acceptsProfiles("development"));
+		SpringApplication.run(SampleSimpleApplication.class, args);
 	}
 }