fix some warnings (unused imports), remove dead code
diff --git a/src/org/sflphone/fragments/CallFragment.java b/src/org/sflphone/fragments/CallFragment.java
index 5b0d30f..452c218 100644
--- a/src/org/sflphone/fragments/CallFragment.java
+++ b/src/org/sflphone/fragments/CallFragment.java
@@ -544,7 +544,7 @@
     }
 
     public void updateCodecName(String currentAudioCodecName) {
-        // In case of multiple codecs in the String
+        // In case of multiple codec in the String
         if (currentAudioCodecName.indexOf(' ') > 0)
             codecNameTxt.setText(currentAudioCodecName.subSequence(0, currentAudioCodecName.indexOf(' ')));
         else