Remove an unused var. (#46)

diff --git a/examples/ex1_standalone_app/src/main/java/com/google/android/mobly/snippet/example1/ExampleSnippet2.java b/examples/ex1_standalone_app/src/main/java/com/google/android/mobly/snippet/example1/ExampleSnippet2.java
index 665d03b..b001132 100644
--- a/examples/ex1_standalone_app/src/main/java/com/google/android/mobly/snippet/example1/ExampleSnippet2.java
+++ b/examples/ex1_standalone_app/src/main/java/com/google/android/mobly/snippet/example1/ExampleSnippet2.java
@@ -17,15 +17,12 @@
 package com.google.android.mobly.snippet.example1;
 
 import com.google.android.mobly.snippet.Snippet;
-import com.google.android.mobly.snippet.event.EventCache;
 import com.google.android.mobly.snippet.rpc.Rpc;
 
 import java.io.IOException;
 
 public class ExampleSnippet2 implements Snippet {
 
-    private final EventCache mEventQueue = EventCache.getInstance();
-
     @Rpc(description = "Returns the given string with the prefix \"bar\"")
     public String getBar(String input) {
         return "bar " + input;