Remove trailing whitespace

Author: DhruvTheDev1

spring-webflux/src/main/java/org/springframework/web/reactive/config/ApiVersionConfigurer.java

@@ -137,7 +137,6 @@ public ApiVersionConfigurer setVersionRequired(boolean required) {
 		if(required && this.versionResolvers.isEmpty()) {
 			throw new IllegalStateException("API Versioning is required but no version resolvers are configured");
 		}
-		
 		return this;
 	}