Fix maven build warnings

Author: zoewangg

metric-publishers/cloudwatch-metric-publisher/pom.xml

@@ -23,10 +23,8 @@
     <artifactId>cloudwatch-metric-publisher</artifactId>
     <name>AWS Java SDK :: Metric Publishers :: CloudWatch</name>
     <packaging>jar</packaging>
-    <version>${awsjavasdk.version}</version>
 
     <properties>
-        <awsjavasdk.version>${project.parent.version}</awsjavasdk.version>
         <jre.version>1.8</jre.version>
     </properties>
 

services-custom/dynamodb-enhanced/pom.xml

@@ -24,7 +24,6 @@
         <version>2.15.41-SNAPSHOT</version>
     </parent>
     <artifactId>dynamodb-enhanced</artifactId>
-    <version>${awsjavasdk.version}</version>
     <name>AWS Java SDK :: DynamoDB :: Enhanced Client</name>
     <url>https://aws.amazon.com/sdkforjava</url>
 

test/sdk-benchmarks/pom.xml

@@ -139,11 +139,6 @@
             <artifactId>dynamodb-enhanced</artifactId>
             <version>${awsjavasdk.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.amazonaws</groupId>
-            <artifactId>aws-java-sdk-dynamodb</artifactId>
-            <version>1.11.748</version>
-        </dependency>
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-tcnative-boringssl-static</artifactId>