Remove noisy log statement from DirectoryHelper.

app/src/main/java/org/thoughtcrime/securesms/contacts/sync/DirectoryHelper.java

@@ -342,7 +342,6 @@ public class DirectoryHelper {
         String mimeType = getMimeType(cursor);
 
         if (!isPhoneMimeType(mimeType)) {
-          Log.w(TAG, "Ignoring unwanted mime type: " + mimeType);
           continue;
         }