remove unused variable

liuchang0812 · liuchang0812 · commit 6a031b6a81d9 · 2014-09-21T22:20:00.000+08:00
diff --git a/util/logging.h b/util/logging.h
@@ -19,7 +19,6 @@
 namespace rocksdb {
 
 class Slice;
-class WritableFile;
 
 // Append a human-readable size in bytes
 int AppendHumanBytes(uint64_t bytes, char* output, int len);
