Cleanup Extra lines and spaces

Author: puneetbehl

examples/pubsub-demo/build.gradle

@@ -1,11 +1,8 @@
 plugins {
-
     id 'application'
     id 'groovy'
-
     id 'org.grails.grails-web'
     id 'org.grails.plugins.views-json'
-
 }
 
 group = 'pubsub.demo'

grails-async-core/build.gradle

@@ -1,24 +1,17 @@
 plugins {
-
     id 'groovy'
     id 'java-library'
-
     id 'maven-publish'
     id 'signing'
-
 }
 
 group = 'org.grails'
 
 dependencies {
-
     implementation libs.groovy
-
     implementation libs.javax.annotation.api
     implementation libs.slf4j.api
-
     testImplementation libs.spock.core
-
 }
 
 apply from: file("$rootProject.projectDir/gradle/java-config.gradle")