title: My log messages are not removed with proguard configuration
body: <p>I am developing my Android app. </p>
  
  <p>Then I enable &amp; configure proguard by:</p>
  
  <p><strong>Step 1. Enable proguard:</strong></p>
  
  <p>In <strong>project.properties</strong> I have:</p>
  
  <pre><code>proguard.config=${sdk.dir}/tools/proguard/proguard-android-optimize.txt:proguard-project.txt
  </code></pre>
  
  <p>I also tried the following:</p>
  
  <pre><code># To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
  proguard.config=proguard.cfg
  </code></pre>
  
  <p><strong>Step 2. Configure proguard:</strong></p>
  
  <p>In <strong>proguard.cfg</strong> I have:</p>
  
  <pre><code>-assumenosideeffects class android.util.Log { *; }
  </code></pre>
  
  <p>I think the above configuration should remove all logs.  </p>
  
  <p>But when I install the APK under <code>target/</code> folder &amp; run my app, I can still see all my Log messages in logcat console. Why?</p>