Fixed versions in POM

Author: patrickwestphal

pom.xml

@@ -69,7 +69,7 @@
     <scala.version>2.11.11</scala.version>
     <scala.binary.version>2.11</scala.binary.version>
     <spark.version>2.2.1</spark.version>
-    <flink.version>1.4.0</flink.version>
+    <flink.version>1.3.2</flink.version>
     <jena.version>3.5.0</jena.version>
     <sansa.stack.version>0.2.0</sansa.stack.version>
     <sansa.rdf.version>${sansa.stack.version}</sansa.rdf.version>
@@ -149,14 +149,6 @@
         <version>${spark.version}</version>
       </dependency>
 
-      <!-- Apache Hadoop -->
-      <!-- Dependency below was added for Spark -->
-      <dependency>
-        <groupId>org.apache.hadoop</groupId>
-        <artifactId>hadoop-common</artifactId>
-        <version>2.7.0</version>
-      </dependency>
-
       <!-- Apache Flink -->
       <dependency>
         <groupId>org.apache.flink</groupId>