Fix debug compilation + small cleanup

Change-Id: Ia89d84f62ba38dee05d25fbc94698e889cf27d2c

native/jni/src/bigram_dictionary.cpp

@@ -30,7 +30,6 @@ BigramDictionary::BigramDictionary(const unsigned char *dict, int maxWordLength,
     : DICT(dict), MAX_WORD_LENGTH(maxWordLength), mParentDictionary(parentDictionary) {
     if (DEBUG_DICT) {
         AKLOGI("BigramDictionary - constructor");
-        AKLOGI("Has Bigram : %d", hasBigram);
     }
 }
 

native/jni/src/dictionary.h

@@ -58,8 +58,6 @@ class Dictionary {
     static int wideStrLen(unsigned short *str);
 
  private:
-    bool hasBigram();
-
     const unsigned char *mDict;
 
     // Used only for the mmap version of dictionary loading, but we use these as dummy variables