Remove LeakCanary

Fixes #3473
// FREEBIE

build.gradle

@@ -69,8 +69,6 @@ dependencies {
     compile 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
     compile 'org.whispersystems:textsecure-android:1.6.0'
 
-    compile 'com.squareup.leakcanary:leakcanary-android:1.3.1'
-
     androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
     androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'
 

src/org/thoughtcrime/securesms/ApplicationContext.java

@@ -22,8 +22,6 @@ import android.os.StrictMode;
 import android.os.StrictMode.ThreadPolicy;
 import android.os.StrictMode.VmPolicy;
 
-import com.squareup.leakcanary.LeakCanary;
-
 import org.thoughtcrime.securesms.crypto.PRNGFixes;
 import org.thoughtcrime.securesms.dependencies.AxolotlStorageModule;
 import org.thoughtcrime.securesms.dependencies.InjectableType;
@@ -82,7 +80,7 @@ public class ApplicationContext extends Application implements DependencyInjecto
 
   private void initializeDeveloperBuild() {
     if (BuildConfig.DEV_BUILD) {
-      LeakCanary.install(this);
+//      LeakCanary.install(this);
       StrictMode.setThreadPolicy(new ThreadPolicy.Builder().detectAll()
                                                            .penaltyLog()
                                                            .build());