[t:4468] In the transaction commit code path, removed uneccesary yield wrapper around log_xcommit.

git-svn-id: file:///svn/toku/tokudb@39803 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/txn.c

@@ -413,7 +413,7 @@ int toku_txn_commit_with_lsn(TOKUTXN txn, int nosync, YIELDF yield, void *yieldv
             .r = 0,
             .txn = txn,
         };
-        yield(log_xcommit, &info, yieldv);
+        log_xcommit(&info);
         r = info.r;
     }
     if (r==0) {