JAVA-9486: Use guava.version defined in the parent pom

core-java-modules/core-java-concurrency-collections-2/pom.xml

@@ -14,11 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.openjdk.jmh</groupId>
             <artifactId>jmh-core</artifactId>
@@ -31,8 +26,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <guava.version>28.2-jre</guava.version>
-    </properties>
-
 </project>