Clean up after ourselves in the Rust Benchmark Template

There's a compliance check for tradefed that ensures that configs for
tests are set to cleanup after themselves. See: https://cs.android.com/android/platform/superproject/main/+/main:tools/tradefederation/core/javatests/com/android/tradefed/presubmit/GeneralTestsConfigValidation.java;l=425-429;drc=1fb7fe35bf7c843b5bac510476d63e4c8b436a48

This causes new benchmarks to fail presubmits.

Test: CLs with rust benchmarks pass presubmits now
Change-Id: I14f64ee3343bcf9bd2d77f547dc16b9c15bf4082
diff --git a/core/rust_device_benchmark_config_template.xml b/core/rust_device_benchmark_config_template.xml
index 2055df2..541630c 100644
--- a/core/rust_device_benchmark_config_template.xml
+++ b/core/rust_device_benchmark_config_template.xml
@@ -16,7 +16,7 @@
 <!-- This test config file is auto-generated. -->
 <configuration description="Config to run {MODULE} rust benchmark tests.">
     <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
-        <option name="cleanup" value="false" />
+        <option name="cleanup" value="true" />
         <option name="push" value="{MODULE}->/data/local/tmp/{MODULE}" />
     </target_preparer>