Clean Guava dependency from performance monitoring

Signed-off-by: Maxim Nesen <maxim.nesen@oracle.com>

tests/performance/test-cases/monitoring/pom.xml

diff --git a/tests/performance/test-cases/monitoring/pom.xml b/tests/performance/test-cases/monitoring/pom.xml
index 3b1404b..f868244 100644
--- a/tests/performance/test-cases/monitoring/pom.xml
+++ b/tests/performance/test-cases/monitoring/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2014, 2018 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2014, 2020 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0, which is available at
@@ -60,12 +60,6 @@
         </dependency>
 
         <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>14.0.1</version>
-        </dependency>
-
-        <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-jdk14</artifactId>
             <version>1.6.1</version>