Moves Guava 15 exclusion from SBT build to POM

pom.xml

@@ -583,10 +583,18 @@
         <artifactId>jackson-databind</artifactId>
         <version>${fasterxml.jackson.version}</version>
       </dependency>
+      <!-- Guava is excluded because of SPARK-6149.  The Guava version referenced in this module is
+           15.0, which causes runtime incompatibility issues. -->
       <dependency>
         <groupId>com.fasterxml.jackson.module</groupId>
         <artifactId>jackson-module-scala_2.10</artifactId>
         <version>${fasterxml.jackson.version}</version>
+        <exclusions>
+          <exclusion>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+          </exclusion>
+        </exclusions>
       </dependency>
       <dependency>
         <groupId>org.scala-lang</groupId>

project/SparkBuild.scala

@@ -220,13 +220,7 @@ object Flume {
   */
 object ExludedDependencies {
   lazy val settings = Seq(
-    libraryDependencies ~= { libs =>
-      libs.filterNot(_.name == "groovy-all").map {
-        case m if m.organization == "com.fasterxml.jackson.module" =>
-          m.exclude("com.google.guava", "guava")
-        case m => m
-      }
-    }
+    libraryDependencies ~= { libs => libs.filterNot(_.name == "groovy-all") }
   )
 }