Remove redundant throws Exception

Closes gh-15645

Author: huangdenghe

spring-boot-project/spring-boot-docs/src/main/asciidoc/getting-started.adoc

@@ -614,7 +614,7 @@ then add a file named `src/main/java/Example.java` to contain the following code
 			return "Hello World!";
 		}
 
-		public static void main(String[] args) throws Exception {
+		public static void main(String[] args) {
 			SpringApplication.run(Example.class, args);
 		}
 

spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -3080,7 +3080,7 @@ following example:
 			return application.sources(Application.class);
 		}
 
-		public static void main(String[] args) throws Exception {
+		public static void main(String[] args) {
 			SpringApplication.run(Application.class, args);
 		}