Remove useless code

I tracked all the calls to the constructor, and the passed
list is never null. It's also final, so it's safe.

Change-Id: I320f907acee0b237bb286a9a183c18106809174a

java/src/com/android/inputmethod/latin/SuggestedWords.java

@@ -59,7 +59,7 @@ public class SuggestedWords {
     }
 
     public SuggestedWordInfo getInfo(int pos) {
-        return mSuggestedWordInfoList != null ? mSuggestedWordInfoList.get(pos) : null;
+        return mSuggestedWordInfoList.get(pos);
     }
 
     public boolean hasAutoCorrectionWord() {