Remove spring-data-commons

Remove direct reference to spring-data-commons, instead favoring
transitive dependency.

Fixes gh-557

Author: Phillip Webb

spring-boot-dependencies/pom.xml

@@ -50,7 +50,6 @@
 		<spring-data-mongodb.version>1.4.1.RELEASE</spring-data-mongodb.version>
 		<spring-data-redis.version>1.1.1.RELEASE</spring-data-redis.version>
 		<spring-data-rest.version>2.0.1.RELEASE</spring-data-rest.version>
-		<spring-data-commons.version>1.7.1.RELEASE</spring-data-commons.version>
 		<spring-hateoas.version>0.9.0.RELEASE</spring-hateoas.version>
 		<spring-rabbit.version>1.2.1.RELEASE</spring-rabbit.version>
 		<spring-mobile.version>1.1.1.RELEASE</spring-mobile.version>
@@ -501,11 +500,6 @@
 				<artifactId>spring-data-redis</artifactId>
 				<version>${spring-data-redis.version}</version>
 			</dependency>
-			<dependency>
-				<groupId>org.springframework.data</groupId>
-				<artifactId>spring-data-commons</artifactId>
-				<version>${spring-data-commons.version}</version>
-			</dependency>
 			<dependency>
 				<groupId>org.springframework.hateoas</groupId>
 				<artifactId>spring-hateoas</artifactId>