No longer require spring-boot-starter-web in eureka-client starter.

See gh-2359

spring-cloud-starter-netflix/spring-cloud-starter-netflix-eureka-client/pom.xml

@@ -18,12 +18,6 @@
 		<main.basedir>${basedir}/../../..</main.basedir>
 	</properties>
 	<dependencies>
-		<dependency>
-			<!-- You actually can't use Eureka as a client unless you register so 
-				it has to be a webapp -->
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
-		</dependency>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-starter</artifactId>